Contact Us

Patient Resource Center

Our patient resource center is dedicated to getting patients and caregivers to the right resources.
Phone: 1 (877) GENENTECH (436-3683)
Hours: Monday - Friday, 6am - 5pm PST

Report an Adverse Event

Report a side effect or harmful experience while taking a Genentech medicine.
Phone: (888) 835-2555
Hours: 24 hrs/day, 7 days/week

Mail: Genentech US Drug Safety
1 DNA Way Mailstop 258A
South San Francisco, CA 94080

Fax: (650) 225-4630

Support For Product Questions, Issues, And Returns

Phone: (800) 551-2231
Hours: Monday - Friday, 6am - 5pm PT
Additional information here.

Report a Product Complaint

Report a product quality issue or abnormality that may be introduced during the manufacturing, labeling, packaging, shipping, handling or storage of products.
Phone: (800) 334-0290
Hours: Monday - Friday, 5am - 5pm PT

Medical Communications

Medical information about Genentech products.
Phone: (800) 821-8590
Chat with a nurse: Click here to chat
Hours: Monday - Friday, 5am - 5pm PT

Clinical Trial Information

Information and support about Genentech sponsored Trials.
Phone: (888) 662-6728
Chat with a nurse: Click here to chat
Hours: Monday - Friday, 5am - 5pm PT

Compassionate Use Information

Call to learn about pre-approval access (PAA) options and eligibility for any ongoing clinical trials.
Phone: (844) 287-3783 (CU-REQUEST)
Hours: Monday - Friday, 5am - 5pm PT