# Grey Market Related Articles

In Pursuit of Experimental Weight-Loss Drugs, a Group of Americans Learn to Pay with Bitcoin

To buy the investigational weight-loss drug retatrutide from an unauthorized Chinese seller, Zach, a 49-year-old American marketing director who previously dismissed Bitcoin as speculative, learned to use cryptocurrency for payment. The annualized transaction volume for such peptide purchases via crypto is now estimated to exceed $100 million, driven largely by first-time crypto users seeking affordable alternatives. These peptides, sold as "research chemicals" without FDA approval, often rely on Bitcoin payments because traditional financial networks exclude such high-risk sellers. While crypto payments in this gray market are growing rapidly—with Q1 2026 inflows hitting $32 million, up 700% year-over-year—they remain a small fraction of the estimated $1-3 billion total peptide black market. The convergence of crypto, biohacking, and fitness cultures is evident in communities like DeSciNYC, where enthusiasts discuss and even self-administer peptides. However, potential FDA moves toward legalizing certain peptides in the U.S. could diminish the role of crypto payments by reintroducing conventional financial channels. Zach, having reached his weight goal, plans to stop his purchases.

Foresight News07/21 11:07