Like gas station kratom, research-grade peptides have become widely available for consumers at convenience stores across the United States. Yet as one investigation into peptides sourced from a New York City bodega found, ease of access comes with a high price: your health.

In new reporting on the peptide trade, CBS took a hard look at gray market peptide products available across the US, including a knockoff of Eli Lilly’s yet-to-be-released injectable weight loss drug retatrutide, bought from a corner store in Brooklyn.

To test what’s actually in a bodega vial labeled “retatrutide,” the news outlet sent samples to Jason Galpin, a researcher of bioorganic chemistry at the University of Iowa. His analysis?…