Contact a Clinical Services Representative

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If the product you are interested in is not listed in the dropdown above, please call 1 (877) 436-3683 or (877) GENENTECH, Monday - Friday, 9am - 8pm EST.

Contact Us

Genentech Customer Service
For product questions, issues, and returns.
Phone: (800) 551-2231
Hours: Monday - Friday, 9am - 8pm EST

Side Effect Reporting

You may report side effects to the FDA at (800) FDA-1088 or

You may also report side effects to Genentech at (888) 835-2555.

Report a Product Complaint

Phone: (800) 334-0290
Hours: Monday - Friday, 5am - 5pm PT