Contact Us

If you have any questions about Bayer in Canada or our products, please contact us at one of the phone numbers or email addresses listed below.

Bayer Inc.
2920 Matheson Boulevard East
Mississauga, Ontario
L4W 5R6

Tel: (905) 282-5550 or 1-800-622-2937

Montréal Office


Bayer Inc.
1250 René-Lévesque West, Suite 2820
Montréal, Québec
H3B 4W8

Tel: (514) 935-4774 or 1-877-229-2685

For medical information about a Bayer. product, or to report a side effect or quality complaint, please contact Bayer Drug Safety and Medical Information at 1-800-265-7382. Please note that you may also report a side effect or quality complaint to your healthcare professional (e.g. treating physician or pharmacist) or your local health authority.


Drug Safety & Medical Information


For inquiries regarding Bayer businesses in Canada, please contact:

  • Animal Health (farm & companion animal products): 1-888-663-5326
  • Consumer Health (non-prescription products): 1-800-265-7382
  • Diabetes Care (patient helpline & software use): 1-800-268-7200
  • Pharmaceuticals (Prescription and contrast media products): 1-800-265-7382
  • Pharmaceuticals (Injectors and Disposables): 1-888-842-2937


Crop Science




Media Contact


If you are a member of the media and have questions about Bayer in Canada, please contact the Communications Department at or 905-282-5541.


Ethics and Compliance


Bayer is committed to ethical business practices, and compliance with laws, industry regulations and company policy. If you have a question about the appropriateness of actions by Bayer or Bayer personnel, please contact our local Bayer Inc. Compliance Officer: 905-282-5555.


General Information


For all other general inquiries, please direct your questions to or by phone at (905) 282-5550 or 1-800-622-2937




Bayer Inc. is committed to providing an accessible environment that respects the dignity and independence of people with disabilities. To view Bayer Inc.’s Statement of Commitment to creating and maintaining accessibility and an accessible environment, click here.


For inquiries related to accessibility at Bayer Inc. please refer to the general information section above.