Contact Us

U.S. Corporate Headquarters

Daiichi Sankyo, Inc.
Two Hilton Court
Parsippany, NJ 07054
Phone: 973-944-2600

Daiichi Sankyo Pharma Development

399 Thornall Street
Edison, NJ 08837
Phone: 732-590-5000

Daiichi Sankyo Call Center

For healthcare providers and patients with questions or concerns about our products.

Patient Assistance Program

Daiichi Sankyo Open Care Program
PO Box 8409
Somerville, NJ 08876
Phone: 1-866-268-7327

Certified Continuing Medical Education

Phone: 973-944-2599

Compliance Hotline

For questions on compliance or ethical issues or to report unethical or questionable activity. 1-877-48-ALERT (1-877-482-5378)

Reporting Adverse Reactions

Please report any adverse reactions to our products to the Daiichi Sankyo Contact Center at 1-877-4 DS-PROD (1-877-437-7763). Or to report negative side effects of prescription drugs to the FDA visit or call 1-800-FDA-1088