Summit Research Peptides

Summit Research Peptides was an online e-commerce vendor that distributed research-grade peptides and GLP-1 receptor agonists, including semaglutide, tirzepatide, retatrutide, cagrilintide, and mazdutide. Although the company marketed its products as 'research use only' or 'intended as a research chemical only,' the U.S. Food and Drug Administration (FDA) issued a warning letter to the company in December 2024, citing that its marketing and social media presence established the products were intended for human use as unapproved new drugs. Following increased regulatory scrutiny, the company's primary storefront domain (summitpeptides.shop) went offline and was parked by mid-2026, indicating the cessation of its operations.