Back to News
Feb 2, 2026 4:01 PM

Sanofi Found In Breach Of UK Pharmaceutical Marketing Code Over Beyfortus Claims

Sanofi SA (NASDAQ:SNY) has been found to have violated the U.K.'s pharmaceutical marketing code after a senior executive made misleading claims in an October 2024 interview, prompting a complaint from rival Pfizer Inc (NYSE:PFE).

The case centers on statements made about Sanofi's RSV drug, Beyfortus, in The Observer.

Pfizer accused Sanofi of breaching several provisions, including promoting a prescription-only medicine to the public, making unsubstantiated superiority claims, and disparaging Pfizer's RSV vaccine and the U.K.’s immunization program.

The Prescription Medicines Code of Practice Authority (PMCPA) ruled that Sanofi ...