Our search of official Pfizer, FDA, and Health Canada sources through July 24, 2026 did not locate a product-specific counterfeit alert for Pfizer/Hospira bacteriostatic water
Celine Gounder explains what this means for patients
Keep the vial away from light by storing it in its original box
From God knows where. Gray-market pharmacies sell knockoff versions of established peptides like semaglutide (Ozempic) as well as experimental compounds, often marketed under the disclaimer for research purposes only. Patients can buy them directly from websites or through messaging apps like WhatsApp, despite little legitimate research supporting many of the products and virtually no regulatory oversight
Racial differences in body composition and cardiometabolic risk during the menopause transition
We found that the cre-dependent ablation of NTS Ppgfl early in development or in adult mice failed to alter energy balance, suggesting the importance of pathways independent of NTS GLP1 for the long-term control of food intake