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Bayer
German multinational pharmaceutical and biotechnology company

Bayer AG is a German multinational pharmaceutical and biotechnology company headquartered in Leverkusen. Founded in 1863 in Barmen by Friedrich Bayer, it initially produced dyestuffs before expanding into pharmaceuticals, famously launching Aspirin in 1899. Bayer's history includes merger into IG Farben in 1925 and post-World War II re-establishment amid controversies over the company's Nazi-era involvement. In 2016, Bayer acquired Monsanto, a deal heavily impacted by litigation over Roundup. Bayer also owns the football club Bayer 04 Leverkusen and remains a key player in pharmaceuticals, agriculture, and biotechnology.

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Early history

Foundation

Bayer AG was founded as a dyestuffs factory in 1863 in Barmen (later part of Wuppertal), Germany, by Friedrich Bayer and his partner, Johann Friedrich Weskott, a master dyer.18 Bayer was responsible for the commercial tasks. Fuchsine and aniline became the company's most important products.19

The headquarters and most production facilities moved from Barmen to a larger area in Elberfeld in 1866. Friedrich Bayer (1851–1920), the son of the company's founder, was a chemist and joined the company in 1873. After the death of his father in 1880, the company became a joint-stock company, Farbenfabriken vorm. Friedr. Bayer & Co, also known as Elberfelder Farbenfabriken.20

A further expansion in Elberfeld was impossible, so the company moved to the village Wiesdorf at Rhein and settled in the area of the alizarin producer Leverkus and Sons. A new city, Leverkusen, was founded there in 1930 and became home to Bayer AG's headquarters. The company's corporate logo, the Bayer cross, was introduced in 1904, consisting of the word BAYER written vertically and horizontally, sharing the Y and enclosed in a circle.21 An illuminated version of the logo is a landmark in Leverkusen.22

Aspirin

Bayer's first major product was acetylsalicylic acid—first described by French chemist Charles Frederic Gerhardt in 185323—a modification of salicylic acid or salicin, a folk remedy found in the bark of the willow plant.2425 By 1899, Bayer's trademark Aspirin was registered worldwide for Bayer's brand of acetylsalicylic acid, but it lost its trademark status in the United States, France and the United Kingdom after the confiscation of Bayer's US assets and trademarks during World War I by the United States, and because of the subsequent widespread usage of the word.26

The term aspirin continued to be used in the US, UK and France for all brands of the drug,27 but it is still a registered trademark of Bayer in over 80 countries, including Canada, Mexico, Germany and Switzerland. As of 2011, approximately 40,000 tons of aspirin were produced each year and 10–20 billion tablets consumed in the United States alone for prevention of cardiovascular events.28 It is on the WHO Model List of Essential Medicines, the most important medications needed in a basic health system.29

There is an unresolved controversy over the roles played by Bayer scientists in the development of aspirin. Arthur Eichengrün, a Bayer chemist, said he was the first to discover an aspirin formulation that did not have the unpleasant side effects of nausea and gastric pain. He also said he had invented the name aspirin and was the first person to use the new formulation to test its safety and efficacy. Bayer contends that aspirin was discovered by Felix Hoffmann to help his father, who had arthritis.30 Various sources support the conflicting claims.3132 Most mainstream historians attribute the invention of aspirin to Hoffmann and/or Eichengrün.3334

Heroin

Heroin (diacetylmorphine), now illegal as an addictive drug, was introduced as a non-addictive substitute for morphine,35 and trademarked and marketed by Bayer from 1898 to 1910 as a cough suppressant and over-the-counter treatment for other common ailments, including pneumonia and tuberculosis.36 While Bayer scientists were not the first to make heroin, the company did lead the way in commercializing it.37 Heroin was a Bayer trademark until after World War I.38 Bayer's director of pharmacology did not want the drug to have "too complicated a name" so Bayer settled on heroisch, the German word for heroic.39

Phenobarbital

In 1903, Bayer licensed the patent for the hypnotic drug diethylbarbituric acid from its inventors Emil Fischer and Joseph von Mering. It was marketed under the trade name Veronal as a sleep aid beginning in 1904. Systematic investigations of the effect of structural changes on potency and duration of action at Bayer led to the discovery of phenobarbital in 1911 and the discovery of its potent anti-epileptic activity in 1912. Phenobarbital was among the most widely used drugs for the treatment of epilepsy through the 1970s, and as of 2014 it remains on the World Health Organization's list of essential medications.4041

World War I

During World War I (1914–1918), Bayer's assets, including the rights to its name and trademarks, were confiscated in the United States, Canada and several other countries.42 In the United States and Canada, Bayer's assets and trademarks, including the well-known Bayer cross, were acquired by Sterling Drug, a predecessor of Sterling Winthrop and were not reclaimed until 1994.

Throughout the war, Bayer was involved in production and development of various chemical weapons. In 1914, Bayer manufactured dianisidine chlorosulfate for use in 105 mm artillery shell, intended as a lung irritant against British forces.4344

In 1916, Bayer scientists discovered suramin, an anti-parasite drug that is still sold by Bayer under the brand name Germanin. The formula of suramin was kept secret by Bayer for commercial reasons, but it was elucidated and published in 1924 by Ernest Fourneau and his team at the Pasteur Institute.4546 It is on the World Health Organization's List of Essential Medicines.47

IG Farben

In 1925, Bayer became part of IG Farben, a German conglomerate formed from the merger of six chemical companies: BASF, Bayer, Hoechst (including Cassella and Kalle & Co. [de]), Agfa, Chemische Fabrik Griesheim-Elektron, and Chemische Fabrik vorm. Weiler Ter Meer.48 In the 1930s, Gerhard Domagk, director of Bayer's Institute of Pathology and Bacteriology, working with chemists Fritz Mietzsch and Joseph Klarer, discovered prontosil, the first commercially available antibacterial drug.49 The discovery and development of this first sulfonamide drug opened a new era in medicine.50 Domagk won the Nobel Prize in Physiology or Medicine in 1939 "for the discovery of the antibacterial effects of prontosil".51 He was forced by the Nazi Party to relinquish the reward; German citizens had been forbidden from accepting Nobel prizes since the Nobel committee had awarded the 1935 Nobel Peace Prize to a German pacifist, Carl von Ossietzky.52

World War II and the Holocaust

Further information: Forced labor in Nazi concentration camps and IG Farben Trial

IG Farben, Bayer's parent company, used slave labour in factories it built in Nazi concentration camps, most notably in the Monowitz concentration camp (known as Auschwitz III), part of the Auschwitz camp complex in German-occupied Poland.5354 By 1943, almost half of IG Farben's 330,000-strong workforce consisted of slave labour or conscripts, including 30,000 Auschwitz prisoners.55

Helmuth Vetter, an Auschwitz camp physician, SS captain and employee of the Bayer group within IG Farben conducted medical experiments on inmates at Auschwitz and at the Mauthausen concentration camp.5657 In one study of an anaesthetic, the company paid RM 170 per person for the use of 150 female inmates of Auschwitz.5859 A Bayer employee wrote to Rudolf Höss, the Auschwitz commandant: "The transport of 150 women arrived in good condition. However, we were unable to obtain conclusive results because they died during the experiments. We would kindly request that you send us another group of women to the same number and at the same price."60

After the war, the Allied Control Council seized IG Farben for "knowingly and prominently ... building up and maintaining German war potential".6162 It was split into its six constituent companies in 1951, then split again into three: BASF, Bayer and Hoechst.6364 Bayer was at that point known as Farbenfabriken Bayer AG; it changed its name to Bayer AG in 1972.65 After the war, some employees of Bayer appeared in the IG Farben Trial, one of the Nuremberg Subsequent Tribunals under US jurisdiction. Among them was Fritz ter Meer, who helped to plan the Monowitz camp (Auschwitz III) and IG Farben's Buna Werke factory at Auschwitz, where medical experimentation had been conducted and where 25,000 forced laborers were deployed. Ter Meer was sentenced to seven years,66 but was released in 1950. Despite being a convicted Nazi war criminal,67 Ter Meer was elected as chairman of Bayer AG's supervisory board in 1956, a position he retained until 1964.68

Helge Wehmeier, then CEO of Bayer, offered a public apology in 1995 to Elie Wiesel for the company's actions during World War II (1939–1945) and the Holocaust.69

Products

Overview

In 1953, Bayer brought the first neuroleptic (chlorpromazine) onto the German market.70 In the 1960s, Bayer introduced a pregnancy test, Primodos, that consisted of two pills that contained norethisterone (as acetate) and ethinylestradiol. It detected pregnancy by inducing menstruation in women who were not pregnant; the presence or absence of menstrual bleeding was then used to determine whether the user was pregnant. The test became the subject of controversy when it was blamed for birth defects, and it was withdrawn from the market in the mid-1970s. Litigation in the 1980s ended inconclusively. A review of the matter by the Medicines and Healthcare products Regulatory Agency in 2014 assessed the studies performed to date and found the evidence for adverse effects to be inconclusive.71

In 1978, Bayer purchased Miles Laboratories and its subsidiaries Miles Canada and Cutter Laboratories, acquiring along with them a variety of product lines including Alka-Seltzer, Flintstones vitamins and One-A-Day vitamins, and Cutter insect repellent.72

Along with the purchase of Cutter, Bayer acquired Cutter's Factor VIII business. Factor VIII, a clotting agent used to treat hemophilia, was produced, at the time, by processing donated blood. In the early days of the AIDS epidemic, people with hemophilia were found to have higher rates of AIDS, and by 1983 the CDC had identified contaminated blood products as a source of infection. According to the New York Times, this was "one of the worst drug-related medical disasters in history". Companies, including Bayer, developed new ways to treat donated blood with heat to decontaminate it, and these new products were introduced early in 1984. In 1997, Bayer and the other three makers of such blood products agreed to pay $660 million to settle cases on behalf of more than 6,000 hemophiliacs infected in United States. But in 2003, documents emerged showing that Cutter had continued to sell unheated blood products in markets outside the US until 1985, including in Malaysia, Singapore, Indonesia, Japan and Argentina, to offload a product they were unable to sell in Europe and the US; they also continued manufacturing the unheated product for several months. Bayer said it did this because some countries were doubtful about the efficacy of the new product.73

Bayer has been involved in other controversies regarding its drug products. In the late 1990s it introduced a statin drug, Baycol (cerivastatin), but after 52 deaths were attributed to it, Bayer discontinued it in 2001. The side effect was rhabdomyolysis, causing kidney failure, which occurred with a tenfold greater frequency in patients treated with Baycol in comparison to those prescribed alternate medications of the statin class.74 Trasylol (aprotinin), used to control bleeding during major surgery, was withdrawn from the market worldwide in 2007 when reports of increased mortality emerged; it was later re-introduced in Europe but not in the US.75

Top-selling pharmaceutical products

In 2014, pharmaceutical products contributed €12.05 billion of Bayer's €40.15 billion in gross revenue.76 In 2019, identified "key growth" products were Xarelto (rivaroxaban), Eylea (aflibercept), Stivarga (regorafenib), Xofigo (radium-223), and Adempas (riociguat).77: 93  Top-selling products as of 2014 included:

  • Kogenate (recombinant clotting factor VIII). Kogenate is a recombinant version of clotting factor VIII,78 the absence or deficiency of which causes the abnormal bleeding associated with haemophilia type A. Kogenate is one of several commercially available Factor VIII products having equivalent efficacy.79
  • Xarelto (rivaroxaban) is a small molecule inhibitor of Factor Xa, a key enzyme involved in blood coagulation. In the United States, the FDA has approved rivaroxaban for the prevention of stroke in people with atrial fibrillation, for the treatment of deep vein thrombosis and pulmonary embolism, and for the prevention of deep vein thrombosis in people undergoing hip surgery.80 Rivaroxaban competes with other newer generation anticoagulants such as edoxaban, apixaban, and dabigatran as well as with the generic anticoagulant warfarin. It has similar efficacy to warfarin and is associated with a lower risk of intracranial bleeding, but unlike warfarin there is no established protocol for rapidly reversing its effects in the event of uncontrolled bleeding or the need for emergency surgery.81
  • Betaseron (interferon beta-1b) is an injectable form of the protein interferon beta used to prevent relapses in the relapsing remitting form of multiple sclerosis.82 Betaseron competes with other injectable forms of interferon beta, glatiramer acetate, and a variety of newer multiple sclerosis drugs, some of which can be taken orally (Dimethyl fumarate, teriflunomide, others).
  • Yasmin / Yaz birth control pills are part of a group of birth control pill products based on the progestin drospirenone. Yaz is approved in the United States for the prevention of pregnancy, to treat symptoms of premenstrual dysphoric disorder in women who choose an oral contraceptive for contraception, and to treat moderate acne in women at least 14 years of age who choose an oral contraceptive for contraception. The FDA conducted a safety review regarding the potential of Yaz and other drospirenone-containing products to increase the risk of blood clots; Yaz and Yasmin were associated with the deaths of 23 women in Canada, leading Health Canada to issue a warning in 2011.83 Although conflicting results were obtained in different studies, the FDA added a warning to the label in 2012 that Yaz and related products may be associated with an increased risk of clotting relative to other birth control pill products.84 Subsequently, a meta analysis suggested that birth control pills of the class Yasmin belongs to raise the risk of blood clots to a greater extent than some other classes of birth control pills.85
  • Nexavar (sorafenib) is a kinase inhibitor used in the treatment of liver cancer (hepatocellular carcinoma), kidney cancer (renal cell carcinoma), and certain types of thyroid cancer.86
  • Trasylol (Aprotinin) Trasylol is a trypsin inhibitor used to control bleeding during major surgery. In a 2006 meeting called by the FDA to review the drug's safety, Bayer scientists failed to reveal the results of an ongoing large study suggesting that Trasylol may increase the risks of death and stroke. According to a FDA official who preferred to remain anonymous, the FDA learned of the study only through information provided to the FDA by a whistleblowing scientist who was involved in it.8788 The study concluded Trasylol carried greater risks of death, serious kidney damage, congestive heart failure and strokes. On 15 December of the same year, the FDA restricted the use of Trasylol,89 and in November 2007, they requested that the company suspend marketing.90 In 2011, Health Canada lifted its suspension of Trasylol for its originally approved indication of limiting bleeding in coronary bypass surgery, citing flaws in the design of the studies that led to its suspension.91 This decision was controversial.9293 In 2013, the European Medicines Agency lifted its suspension of the Trasylol marketing authorization for selected patients undergoing cardiac bypass surgery, citing a favorable risk-benefit ratio.94
  • Cipro (ciprofloxacin) Ciprofloxacin was approved by the US Food and Drug Administration (FDA) in 1987. Ciprofloxacin is the most widely used of the second-generation quinolone antibiotics that came into clinical use in the late 1980s and early 1990s.9596 In 2010, over 20 million outpatient prescriptions were written for ciprofloxacin, making it the 35th-most commonly prescribed drug, and the 5th-most commonly prescribed antibacterial, in the US.97
  • Rennie antacid tablets, one of the biggest selling branded over-the-counter medications sold in Great Britain, with sales of £29.8 million.98

Agricultural

Bayer produces various fungicides, herbicides, insecticides, and some crop varieties.99

  • Fungicides are primarily marketed for cereal crops, fresh produce, fungal with bacteria-based pesticides, and control of mildew and rust diseases.100 Nativo products are a mixture of trifloxystrobin tebuconazole.101102 XPro products are a mix ofbixafenand prothioconazole,103 while Luna contains fluopyram and pyrimethanil.104
  • Herbicides are marketed primarily for field crops and orchards.105 Liberty brands containing glufosinate (a.k.a. Liberty or Basta) are used for general weed control.106 Capreno containing a mixture of thiencarbazone-methyland tembotrione is used for grass and broad-leaf control.107
  • Insecticides are marketed according to specific crop and insect pest type.108 Foliar insecticides include Belt containing flubendiamide, which is marketed against Lepidopteran pests,109 and Movento containing spirotetramat, which is marketed against sucking insects.110 Neonicotinoids such as clothianidin and imidacloprid are used as systemic seed treatments products such as Poncho and Gaucho.111112 In 2008, neonicotinoids came under increasing scrutiny over their environmental impacts starting in Germany. Neonicotinoid use has been linked in a range of studies to adverse ecological effects, including honey-bee colony collapse disorder (CCD) and loss of birds due to a reduction in insect populations. In 2013, the European Union and a few non EU countries restricted the use of certain neonicotinoids.113114115 Parathion was discovered by scientists at IG Farben in the 1940s as a cholinesterase inhibitor insecticide. Propoxur is a carbamate insecticide that was introduced by Bayer in 1959.116

Acquisitions

Bayer factory in Leverkusen, Germany, 2009

Overview

In 1994, Bayer AG purchased Sterling Winthrop's over-the-counter (OTC) drug business from SmithKline Beecham and merged it with Miles Laboratories, thereby reclaiming the U.S. and Canadian trademark rights to "Bayer" and the Bayer cross, as well as the ownership of the Aspirin trademark in Canada.117

In 2004, Bayer HealthCare acquired the over-the-counter pharmaceutical division of Roche.118 In March 2008, Bayer HealthCare announced an agreement to acquire the portfolio and OTC division of privately owned Sagmel, Inc., a US-based company that markets OTC medications in most of the Commonwealth of Independent States countries such as Russia, Ukraine, Kazakhstan, Belarus, and others.119120

On 28 August 2008, an explosion occurred at the Bayer CropScience facility at Institute, West Virginia, United States. A runaway reaction ruptured a tank and the resulting explosion killed two employees.121 The ruptured tank was close to a methyl isocyanate tank which was undamaged by the explosion.122

Acquisition of Schering

In March 2006, Merck KGaA announced a €14.6 billion bid for Schering AG, founded in 1851. By 2006, Schering had annual gross revenue of around €5 billion123 and employed about 26,000 people in 140 subsidiaries worldwide.124 Bayer responded with a white knight bid and in July acquired the majority of shares of Schering for €14.6 billion,125 and in 2007, Bayer took over Schering AG and formed Bayer Schering Pharma. The acquisition of Schering was the largest take-over in Bayer's history,126127 and as of 2015, was one of the ten biggest pharma mergers of all time.128

Other acquisitions

In November 2010, Bayer AG signed an agreement to buy Auckland-based animal health company Bomac Group.129 Bayer partnered on the development of the radiotherapeutic Xofigo with Algeta, and in 2014, moved to acquire the company for about $2.9 billion.130 In 2014, Bayer agreed to buy Merck's consumer health business for $14.2 billion which would provide Bayer control with brands such as Claritin, Coppertone and Dr. Scholl's. Bayer would attain second place globally in nonprescription drugs.131 In June 2015, Bayer agreed to sell its diabetic care business to Panasonic Healthcare Holdings for a fee of $1.02 billion.132

In August 2019, the business acquired the ≈60% of BlueRock Therapeutics it didn't already own for up to $600 million.133134

In August 2020, Bayer announced it had acquired KaNDy Therapeutics Ltd, helping to boost its female healthcare business, for $425 million.135136137 In October, Bayer agreed to acquire Asklepios BioPharmaceuticals for $2 billion upfront.138

In June 2021, the company announced it acquire Noria Therapeutics Inc. and PSMA Therapeutics Inc. gaining rights to a number of cancer-based investigational compounds based on actinium-225.139

Spin off of Covestro

In September 2015, Bayer spun out its $12.3 billion materials science division into a separate, publicly traded company called Covestro in which it retained about a 70% interest.140141 Bayer spun out the division because it had relatively low profit margins compared to its life science divisions (10.2%, compared with 24.9% for the agriculture business and 27.5% for healthcare) and because the business required high levels of investment to maintain its growth, and to more clearly focus its efforts and identity in the life sciences.142 Covestro shares were first offered on the Frankfurt Stock Exchange in October 2015.143 Effective January 2016 following the spinout of Covestro, Bayer rebranded itself as a life sciences company, and restructured into three divisions and one business unit: Pharmaceuticals, Consumer Health, Crop Science, and Animal Health.144

Acquisition of Monsanto

In May 2016, Bayer offered to buy U.S. biotechnology company Monsanto for $62 billion.145 Shortly after Bayer's offer, Monsanto rejected the acquisition bid, seeking a higher price.146 In September 2016, Monsanto agreed to a $66 billion offer by Bayer.147 In order to receive regulatory approval, Bayer agreed to divest a significant amount of its current agricultural assets to BASF in a series of deals.148149150151 On 21 March 2018 the deal was approved by the European Union,152153 and it was approved in the United States on 20 May 2018.154 The sale closed on 7 June 2018.155 The Monsanto brand was discontinued; its products are now marketed under the Bayer name.156 On 16 September 2019, under the approval of National Company Law Tribunal, Bayer completed the merger of Monsanto India.157

Bayer's Monsanto acquisition is the biggest acquisition by a German company to date.158 However, owing to ongoing litigation concerning the Monsanto's herbicide Roundup and the massive financial and reputational blows it has caused Bayer, the deal is considered one of the worst corporate mergers in history.159160161162 By 2023, Bayer's market value had declined by over 60% since its 2016 merger, leaving the company's overall worth at less than half of what it paid to acquire Monsanto.163

Acquisition history

Corporate structure

Sales by business unit (2023)164
Business unitshare
Crop Science48.8%
Pharmaceuticals38.0%
Consumer Health12.7%
Other0.5%

In 2003, to separate operational and strategic managements, Bayer AG was reorganized into a holding company. The group's core businesses were transformed into limited companies, each controlled by Bayer AG. These companies were: Bayer CropScience AG; Bayer HealthCare AG; Bayer MaterialScience AG and Bayer Chemicals AG, and the three service limited companies Bayer Technology Services GmbH, Bayer Business Services GmbH and Bayer Industry Services GmbH & Co. OHG. In 2016, the company began a second restructuring with the aim of allowing it to transition to a life sciences based company.165 By divesting its Chemicals division in 2004 and with the aim of off-loading its Materials division by mid-2016, Bayer will be left with the four core units, as depicted below.166167

Bayer AGDivested business units
Bayer PharmaceuticalsHead of Division: Stefan OelrichBayer Consumer HealthHead of Division: Heiko SchipperBayer Crop ScienceHead of Division: Rodrigo Santos Lanxess (Bayer Chemicals AG)Diagnostics Division Diabetes Devices Division Covestro (Bayer MaterialScience)Bayer Animal Health (sold to Elanco)

Bayer CropScience

Bayer CropScience has products in crop protection (i.e. pesticides), nonagricultural pest control, and seeds and plant biotechnology. In addition to conventional agrochemical business, it is involved in genetic engineering of food.168 In 2002, Bayer AG acquired Aventis (now part of Sanofi) CropScience and fused it with their own agrochemicals division (Bayer Pflanzenschutz or "Crop Protection") to form Bayer CropScience; the Belgian biotech company Plant Genetic Systems became part of Bayer through the Aventis acquisition.169 Also in 2002, Bayer AG acquired the Dutch seed company Nunhems, which at the time was one of the world's top five seed companies.170171: 270  In 2006, the U.S. Department of Agriculture announced that Bayer CropScience's LibertyLink genetically modified rice had contaminated the U.S. rice supply. Shortly after the public learned of the contamination, the E.U. banned imports of U.S. long-grain rice and the futures price plunged. In April 2010, a Lonoke County, Arkansas jury awarded a dozen farmers $48 million. The case was appealed to the Arkansas Supreme Court, which affirmed the judgement.172 On 1 July 2011, Bayer CropScience agreed to a global settlement for up to $750 million.173 In September 2014, the firm announced plans to invest $1 billion in the United States between 2013 and 2016. A Bayer spokesperson said that the largest investments will be made to expand the production of its herbicide Liberty. Liberty is an alternative to Monsanto's product, Roundup, which are both used to kill weeds. 174 In 2016, as part of the wholesale corporate restructuring, Bayer CropScience became one of the three major divisions of Bayer AG, reporting directly to the head of the division, Liam Condon.175 Under the terms of the merger, Bayer promised to maintain Monsanto's more than 9,000 U.S. jobs and add 3,000 new U.S. high-tech positions.176 The prospective merger parties said at the time the combined agriculture business planned to spend $16 billion on research and development over the next six years and at least $8 billion on research and development in the United States.177 The global headquarters of Bayer CropScience is located in St. Louis, Missouri, United States.178179180

Bayer CropScience Limited is the Indian subsidiary of Bayer AG. It is listed on the Indian stock exchanges; the Bombay Stock Exchange and National Stock Exchange of India, and has a market capitalization of $2 billion.181 Bayer BioScience, headquartered in Hyderabad, India, has about 400 employees, and has research, production, and an extensive sales network spread across India.182183

Bayer Consumer Health

Before the 2016 restructuring, Bayer HealthCare comprised a further four subdivisions: Bayer Schering Pharma, Bayer Consumer Care, Bayer Animal Health and Bayer Medical Care.184 As part of the corporate restructuring, Animal Health was moved into its own business unit, leaving the division with the following categories; Allergy, Analgesics, Cardiovascular Risk Prevention, Cough & Cold, Dermatology, Foot Care, Gastrointestinals, Nutritionals and Sun Care.185

Bayer Consumer Care manages Bayer's OTC medicines portfolio. Key products include analgesics such as Bayer Aspirin and Aleve, food supplements Redoxon and Berocca, and skincare products Bepanthen and Bepanthol.186 Women's healthcare is an example of a General Medicine business unit. Bayer Pharma produces the birth control pills Yaz and Yasmin. Both pills use a newer type of progestin hormone called drospirenone in combination with estrogen. Yaz is advertised as a treatment for premenstrual dysphoric disorder (PMDD) and moderate acne. Other key products include the cancer drug Nexavar, the multiple sclerosis drug betaferon/betaseron and the blood-clotting drug, Kogenate.187 In May 2014, it was announced that Bayer would buy Merck & Co's consumer health care unit for $14.2 billion.188 Bayer also controls Dihon Pharmaceutical Group Co., Ltd in China.189

Bayer Pharmaceuticals

The Pharmaceuticals Division focuses on prescription products, especially for women's healthcare and cardiology, and also on specialty therapeutics in the areas of oncology, hematology and ophthalmology. The division also comprises the Radiology Business Unit which markets contrast-enhanced diagnostic imaging equipment together with the necessary contrast agents.190

In addition to internal R&D, Bayer has participated in public–private partnerships. One example in the area of non-clinical safety assessment is the InnoMed PredTox program.191192 Another is the Innovative Medicines Initiative of EFPIA and the European Commission.193

Defunct business units

Bayer Chemicals AG (with the exception of H.C. Starck and Wolff Walsrode) was combined with certain components of the polymers segment to form the new company Lanxess on 1 July 2004; Lanxess was listed on the Frankfurt Stock Exchange in early 2005.194 Bayer HealthCare's Diagnostics Division was acquired by Siemens Medical Solutions in January 2007.195

Bayer sold its Animal Health business to Elanco in 2020.196

Bayer Diabetes Care managed Bayer's medical devices portfolio. Key products included the blood glucose monitors Contour Next EZ (XT), Contour, Contour USB and Breeze 2 used in the management of diabetes.197 The diabetes business unit was sold to Panasonic Healthcare Co. for $1.15 billion in June 2015.198 Bayer MaterialScience was a supplier of high-tech polymers, and developed solutions for a broad range of applications relevant to everyday life.199 On 18 September 2014, the Board of Directors of Bayer AG announced plans to float the Bayer MaterialScience business on the stock market as a separate entity.200 On 1 June 2015, Bayer announced that the new company would be named Covestro;201 Bayer formally spun out Covestro in September 2015.202

Ownership

The 10 largest shareholders of Bayer AG in early 2024 were:203

Shareholder namePercentage
Temasek Holdings3.5%
Norges Bank3.1%
Silchester International Investors3.0%
Amundi0.9%
MFS Investment Management (UK)0.6%
Universal-Investment-Gesellschaft mbH0.5%
Lyxor0.4%
Union Investment Institutional GmbH0.4%
Union Investment Privatfonds GmbH0.4%
HSBC Global Asset Management GmbH0.4%
Others86.8%

Finances

For the fiscal year 2017, Bayer reported earnings of EUR€7.3 billion, with an annual revenue of EUR€35 billion, a decrease of 25.1% over the previous fiscal cycle.204 Bayer's shares traded at over €69 per share, and its market capitalization was valued at US€65.4 billion in November 2018.205 In September 2019, Bayer announced to reduce the number of management board members from seven to five to reduce overall costs.206

The key trends of Bayer are (as at the financial year ending December 31):207208

YearRevenue209(€ bn)Net income210(€ bn)Total assets(€ bn)Research and development expenses (€ bn)Employees
201340.13.151.33.4112,360
201442.23.470.23.5118,888
201546.34.173.94.2116,800
201646.74.582.24.4115,200
2017*35.07.375.04.599,820
201839.51.61265.1107,894
201943.54.01265.3103,824
202041.4−10.41177.199,538
202144.01.01205.499,637
202250.74.11246.5101,369
202347.6−2.911699,723
202446.6−2.611196,184

* without Covestro from 2017 on

Bayer 04 Leverkusen

Main article: Bayer 04 Leverkusen

In 1904, the company founded the sports club TuS 04 ("Turn- und Spielverein der Farbenfabriken vorm. Friedr. Bayer & Co."), later SV Bayer 04 ("Sportvereinigung Bayer 04 Leverkusen"), finally becoming TSV Bayer 04 Leverkusen ("Turn- und Sportverein") in 1984, generally, however, known simply as Bayer 04 Leverkusen. The club is best known for its football team, but has been involved in many other sports, including athletics, fencing, team handball, volleyball, boxing, and basketball. TSV Bayer 04 Leverkusen is one of the largest sports clubs in Germany. The company also supports similar clubs at other company sites, including Dormagen (particularly handball), Wuppertal (particularly volleyball), and Krefeld-Uerdingen (featuring another former Bundesliga football club, SC Bayer 05 Uerdingen, now KFC Uerdingen 05).211

Awards and recognition

In October 2008, Bayer's Canadian division was named one of "Canada's Top 100 Employers" by Mediacorp Canada Inc. The Canadian division was named one of Greater Toronto's Top Employers by the Toronto Star newspaper.212 Bayer USA was given a score of 85 (out of 100) in the Human Rights Campaign's 2011 Corporate Equality Index, a measure of gay and lesbian workplace equality.213

In 2016, Standard Ethics Aei gave a rating to Bayer in order to include the company in its Standard Ethics German Index. Bayer received an EE− rating, the fourth tier in an eight-tier ranking.214

Ranked third in Access to Seeds Index in 2016.215216

Litigation

Roundup

In August 2018, two months after Bayer acquired Monsanto,217 a U.S. jury ordered Monsanto to pay $289 million to a school groundskeeper who claimed his Non-Hodgkin's lymphoma was caused by regularly using Roundup, a glyphosate-based herbicide produced by Monsanto.218 Following the Johnson v. Monsanto Co. verdict, Bayer's share price dropped by around 14% or $14 Billion in market capitalization.219 The company filed an appeal on 18 September 2018.220 Pending appeal, the award was later reduced to $78.5 million.221222 In November 2018, Monsanto appealed the judgement, asking an appellate court to consider a motion for a new trial.223 A verdict on the appeal was delivered in June 2020 upholding the verdict but further reducing the award to $21.5 million.224 On 13 May 2019, a United States Superior Court Judge ordered Bayer to pay more than $ 2.5 billion in damages to a couple in California, both of whom contracted non-Hodgkin's Lymphoma, later cut to $87 million on appeal.225

In June 2020, the company agreed to pay $9.6 billion to settle more than 10,000 lawsuits claiming harm from Roundup, saying this action will result in the resolution of 75% of those claims. Bayer will also assign $1.25 billion for future claims, an action that needs approval from the US District Court, Northern District of California. The settlement, according to the company, does not admit either liability or wrongdoing, but brings an end to irresolution in the case.226 The settlement does not include three cases that have already gone to jury trials and are being appealed.227 In July 2020, the California Court of Appeals denied the appeal but reduced the damages owed to $20.4 million.228 As of 2023, around 165,000 claims, more than 50,000 of which still pending, have been made against Roundup, mostly alleging that it had caused cancer.229

The general consensus among national regulatory agencies, and the European Commission is that labeled usage of the herbicide poses no carcinogenic or genotoxic risk to humans.230231232233 In January 2020, the US Environmental Protection Agency (EPA) finalized its interim registration review for Roundup, stating that it "...did not identify any risks of concern" for cancer and other risks to humans from glyphosate exposure."234 On 17 June 2022, California-based United States Court of Appeals for the Ninth Circuit ordered the Environmental Protection Agency to reexamine this 2020 finding that glyphosate did not pose a health risk for people exposed to it by any means.235

In 2024, legislation was introduced in Iowa, Missouri and Idaho with language supplied by Bayer that experts say could shield the company from any lawsuits related to cancer risk. Bayer leads a group called Modern Ag Alliance which produces advertisements claiming that lawsuits threaten the availability of glyphosate.236 In 2025, flyers from a dark money source were sent to constituents of Missouri senators who oppose the bill, claiming that the lawmakers' opposition would cause "Chinese Communist Party chemicals" to enter the food supply. The targeted senators allege that Bayer is behind the mailers, which Bayer denies.237

Xarelto

In 2019, Bayer and Johnson & Johnson (who market Xarelto together) settled around 25,000 lawsuits on the blood thinning drug Xarelto (rivaroxaban) by agreeing to disburse $775 million (US) to federal and state plaintiffs who said the companies had not properly warned patients about possible fatal bleeding as a result of ingesting the drug. There was no admission of liability from the companies in the settlement as they noted they had prevailed in six previous trials. The settlement will be divided evenly between the companies.238

One A Day Vitamins

In 2019, a federal jury in San Francisco CA sided with Bayer in a $600 million (US) class action suit alleging that the company misinformed consumers by promoting its One A Day vitamins as supporting cardiac health, vigorous immune systems and boosting user energy. The suit was first filed as a nationwide class action; in 2017, the US District Court in San Francisco said subclasses of purchasers of the vitamin in Florida, New York, and California could act together.239

The jury found that the plaintiffs failed to prove that Bayer misrepresented its One A Day claims, and also did not demonstrate that any of the class representative consumers who purchased One A Day relied on the so-called false information as part of their buying decision.240

HIV contamination

In the mid-1980s, when Bayer's Cutter Laboratories realized that their blood products, the clotting agents Factor VIII and IX, were contaminated with HIV, the financial investment in the product was considered too high to destroy the inventory. Bayer misrepresented the results of its own research and knowingly supplied hemophilia medication tainted with HIV to patients in Asia and Latin America, without the precaution of heat treating the product, recommended for eliminating the risk. As a consequence, thousands who infused the product tested positive for HIV and later developed AIDS.241

Dicamba

On 14 February 2020, Bayer and BASF were ordered to pay Missouri peach farmer Bill Bader $15 million in damages as a result of destruction of his peach trees which was caused by the usage of dicamba by nearby farmers.242 Dicamba was another product which Bayer acquired from Monsanto.243 Bayer also inherited the lawsuit from Monsanto as well.244245 On 15 February 2020, Bayer—representing Monsanto—and BASF were ordered to pay not only the $15 million in damages, but an additional $250 million in punitive damages.246247248 Bayer and BASF afterwards announced plans to appeal the $265 million fine.249

In June 2020, Bayer agreed to a settlement of up to $400 million for all 2015 to 2020 crop year dicamba claims, not including the $265 million judgement.250 On 25 November 2020, U.S. District Judge Stephen Limbaugh Jr. reduced the punitive damage amount in the Bader Farms case to $60 million.251

PCB pollution

In June 2020, Bayer agreed to pay $800 million to settle lawsuits in a variety of jurisdictions which claimed contamination of public waterways with PCBs by Monsanto before 1978.252 On 25 November 2020, however, U.S. District Judge Fernando M. Olguin rejected Bayer's settlement offer, which was now at $650 million, and allowed Monsanto-related lawsuits involving PCB to proceed.253

Talc-related liabilities

On 4 April 2023, a Delaware judge dismissed a lawsuit by Merck & Co’s seeking to hold Bayer AG responsible for more talc-related liabilities stemming from its $14.2 billion purchase of Merck’s consumer care business in 2014. The judge called Bayer’s interpretation of the purchase agreement “the only reasonable one,” and said letting Merck “dump” cases would give the Rahway, New Jersey–based company an incentive to prolong or stall lawsuits. Bayer said in a statement, it welcomed the decision, and it "will continue to defend itself against any further efforts by Merck to avoid or improperly transfer its liabilities to Bayer”.254

See also

Notes

Works cited

  • Bangen H (1992). Geschichte der medikamentösen Therapie der Schizophrenie. Berlin: VWB-Verlag. ISBN 3-927408-82-4.
  • Dickerman M (2017). "Monowitz". In Bartrop PR, Dickerman M (eds.). The Holocaust: An Encyclopedia and Document Collection. Volume 1. Santa Barbara: ABC-CLIO. pp. 439–440.
  • Strzelecka I (2000). "Experiments". In Długoborski W, Piper F (eds.). Auschwitz, 1940–1945. Central Issues in the History of the Camp. Volume 2: The Prisoners, their Life and Work. Oświęcim: Auschwitz-Birkenau State Museum.
  • Fernandez H, Libby TA (2011). Heroin: Its History, Pharmacology & Treatment. Center City, MN: Hazelden Publishing.
  • Hager T (2006). The Demon under the Microscope. Harmony Books. ISBN 1-4000-8214-5.
  • Hayes P (2001) [1987]. Industry and Ideology: IG Farben in the Nazi Era. Cambridge: Cambridge University Press.
  • Jacobs SL (2017). "I G Farben". In Bartrop PR, Dickerman M (eds.). The Holocaust: An Encyclopedia and Document Collection. Volume 1. Santa Barbara: ABC-CLIO. pp. 312–314.
  • Jeffreys D (2009) [2008]. Hell's Cartel: IG Farben and the Making of Hitler's War Machine. London: Bloomsbury Publishing PLC.
  • Kumar BR (2012). Mega Mergers and Acquisitions: Case Studies from Key Industries. New York: Palgrave Macmillan. ISBN 978-1137005908.
  • Lewis D, Zitzlsperger U (2016). "Bayer AG". Historical Dictionary of Contemporary Germany. Lanham, MA, and Plymouth: Rowman & Littlefield.
Lifton RJ, Hackett A (1998). "Nazi Doctors". In Berenbaum M, Gutman Y (eds.). Anatomy of the Auschwitz Death Camp. Bloomington: Indiana University Press. pp. 301–316.
  • Rees L (2006) [2005]. Auschwitz: A New History. New York: PublicAffairs.
  • Sánchez-Serrano I (2011). The World's Health Care Crisis: From the Laboratory Bench to the Patient's Bedside. Elsevier. ISBN 978-0123918758.
  • Sneader W (2005). Drug Discovery: A History. John Wiley & Sons. ISBN 978-0471899792.
  • Schrör K (2016). Acetylsalicylic Acid. Weinheim: Wiley-VCH.
  • Tammen H (1978). Die I.G. Farbenindustrie Aktiengesellschaft (1925–1933): Ein Chemiekonzern in der Weimarer Republik. Berlin: H. Tammen. ISBN 3-88344-001-9.
  • The United Nations War Crimes Commission (1949). "Law Reports of Trials of War Criminals. Volume X: The I.G. Farben and Krupp trials" (PDF). London: His Majesty's Stationery Office. pp. 1–67. Archived (PDF) from the original on 11 December 2008.
  • Vardanyan R, Hruby V (2016). Synthesis of Best-Seller Drugs. Academic Press.

Further reading

  • "The original Bayer Aspirin". wonderdrug.com. Bayer AG.
  • Blaschke, Stefan (1999). Unternehmen und Gemeinde: Das Bayerwerk im Raum Leverkusen 1891–1914. Cologne: SH-Verlag. ISBN 3-89498-068-0
  • Cornwell J (2004). Hitler's Scientists: Science, War, and the Devil's Pact. London: Penguin Books.
  • Lesch JE, ed. (2000). The German Chemical Industry in the Twentieth Century. Dordrecht: Springer Netherlands.
  • Plumpe G (1990). Die I.G. Farbenindustrie AG: Wirtschaft, Technik und Politik 1904–1945. Berlin: Duncker & Humblot.
  • Stokes R (1988). Divide and Prosper: The Heirs of I.G. Farben under Allied Authority, 1945–1951. Berkeley: University of California Press.
  • Stokes R (1994). Opting for Oil: The Political Economy of Technological Change in the West German Chemical Industry, 1945–1961. New York: Cambridge University Press.
  • Tenfelde, Klaus (2007). Stimmt die Chemie? : Mitbestimmung und Sozialpolitik in der Geschichte des Bayer-Konzerns. Essen: Klartext. ISBN 978-3-89861-888-5
  • Tully J (2011). The Devil's Milk: A Social History of Rubber. New York: Monthly Review Press.
Wikimedia Commons has media related to Bayer.

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