New England Compounding Center outbreak (2012)
A Massachusetts compounding pharmacy shipped thousands of vials of steroid injections contaminated with fungus. The injections sickened hundreds of patients across 20 states and killed more than 60 people, making it the deadliest drug-safety failure in modern U.S. history.
The company collapsed. Congress passed the Drug Quality and Security Act in 2013, creating the 503A/503B distinction between small compounders and larger outsourcing facilities.
The law tightened federal oversight of compounding, but small 503A pharmacies still answer mostly to state boards. The outbreak remains the reference point for any debate about unapproved compounded drugs.
The 503A/503B framework the peptide policy relies on was born from this outbreak. Critics warn that expanding access to unapproved compounds revives the safety risks that outbreak exposed.
