Contact Us

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

For medical information about a Bayer Inc. product, or to report a side effect or quality complaint, please contact Bayer HealthCare 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 health care professional (e.g. treating physician or pharmacist) or your local health authority.


Drug Safety & Medical Information

For inquiries regarding our HealthCare businesses in Canada, please contact:

Animal Health (farm & companion animal products)Phone: 1-888-663-5326
Consumer Care (non-prescription products)Phone: 1-800-265-7382
Diabetes Care (patient helpline & software use)Phone: 1-800-268-7200
Pharmaceuticals (prescription products)Phone: 1-800-265-7382

Bayer MaterialScience

For inquiries regarding our MaterialScience (polyurethanes, polycarbonates coatings, adhesives & sealants, thermoplastic polyurethanes) business in Canada, please contact:

Bayer CropScience

For inquiries regarding our CropScience business in Canada, please contact:

Toll-Free Helpdesk: 1-888-283-6847

Email: Cereals/Oilseeds/Pulse –

Horticulture & Row Crops –

In case of any emergency with any Bayer CropScience product call: 1-800-334-7577

Media Contact

If you are a member of the media and have questions about Bayer in Canada, please contact Marija Mandic, Director of Communications, at, or 416-240-5376, or Emily Hanft, Senior Business Communications Partner, at, or 416-240-5466.

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: 416-248-3055

General Information

For all other general inquiries, please direct your questions to or by phone at (416) 248-0771 or 1-800-622-2937

Mailing address:

Toronto Office

Bayer Inc.
Attention: Communications
77 Belfield Road
Toronto, Ontario
M9W 1G6
Tel: (416) 248-0771 or 1-800-622-2937

Link to Map

Directions from Lester B. Pearson Int'l Airport

Driving directions
to 77 Belfield Road

From Toronto Pearson International Airport, take Airport Road and turn left to merge onto highway 409 East toward highway 401 East. Take the Martin Grove Road North exit, and turn left onto Martin Grove Road. Then, turn right onto Belfield Road. 77 Belfield Road will be on your right.

Montréal Office

Bayer Inc.
Attention: Communications
1250 René-Lévesque West, Suite 2820
Montréal, Québec
H3B 4W8
Tel: (514) 935-4774 or 1-877-229-2685

Link to Map

Directions from Pierre Elliot Trudeau Int'l Airport

Driving directions
to 1250 René-Lévesque West

From Montréal-Pierre Elliott Trudeau International Airport, take Roméo-Vachon Blvd N. Follow signs for Autoroute 20/Montréal/Toronto and merge onto Autoroute 520. At the roundabout, take the 3rd exit onto Boul Montréal-Toronto. Take the Autoroute 20 E ramp on the left and merge onto Autoroute 20. Continue onto Autoroute 720 E and take exit 3 for Rue Guy toward Montréal/Centre-Ville. Turn right onto René-Lévesque Blvd W. 1250 René-Lévesque West will be on your right.


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.

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