Contact us

XTANDI Support Solutions®

Phone: 1-855-8XTANDI (1-855-898-2634)

Business hours for dedicated access specialists:
8 AM to 8 PM ET (Monday–Friday)

XTANDI Patient Savings Program

Phone: 1-855-217-8311

Business hours: 8 AM to 8 PM ET (Monday–Friday)

Headquarters for the Americas

Astellas Pharma US, Inc.

1 Astellas Way
Northbrook, IL 60062


Pfizer Inc.

P.O. Box 29387
Shawnee Mission, KS 66201


Corporate Communications


Learn more about XTANDI

Doctor discussion guide

Need to prepare for your next doctor’s visit?

Clinical glossary

Need some help decoding medical words and phrases? Our glossary of clinical terms can help

How XTANDI was studied

See how XTANDI performed in multiple clinical trials