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Do you have questions about Bayer and how we are shaping the future of agriculture? Connect with us on social media, or directly using contact details or contact form below. We’d be happy to answer your questions!



Global Headquarters (Incl. Crop Protection):

Bayer AG
Crop Science Division
Alfred-Nobel-Str. 50
40789 Monheim am Rhein, Germany


Global Seeds & Traits Headquarters:

Crop Science Division
800 N. Lindbergh Blvd.
St. Louis, MO 63167



For general requests/switchboard: +49 (0) 21 73 - 38-0
For general requests/switchboard - United States of America: +1 (314) 694 1000
For media inquiries: +49 (0) 21 73 - 38 30 34

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Bayer respects your right to privacy while using our websites. We take the protection of personal data very seriously and will only collect, process, and use any personal data that you provide in this contact form in accordance with our data privacy policy.

Message about reporting adverse reactions (side effects)

Humans vary in their biological reactions to medicinal products. This is why not all adverse reactions (side effects) associated with the use of medicinal products can be detected during clinical development, not even by the most comprehensive clinical trials. Capturing as many of these adverse reactions, however rare they may be in absolute terms, from worldwide sources is of paramount importance for continued patient and drug safety (pharmacovigilance). 


For Bayer as a global pharmaceutical company, pharmacovigilance takes center stage, beyond mere compliance with worldwide regulations. To enable Bayer to provide up-to date safety information on Bayer products, your support is pivotal, whether you are a customer, patient or healthcare professional. 


If you want to report a side effect or quality complaint, please contact your healthcare professional (e.g. physician or pharmacist) or your local health authority. 


Reports can also be made on our Side Effect Reporting website.