Report Vaccine Side Effects
Report an adverse event to the FDA/CDC Vaccine Adverse Event Reporting System (VAERS)
Report an adverse event to Pfizer Inc.
Authenticity of COMIRNATY 2025‑2026
Formula
If you suspect the vaccine you purchased may be counterfeit, contact us at 1‑800‑438‑1985 or visit www.pfizer.com/products/product-contact-information
To learn more about how Pfizer is working to fight counterfeit medicines, visit www.pfizer.com/products/medicine-safety/counterfeiting
For More Information
Contact your healthcare provider with any additional questions.