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Safety/quality uncertainty can dominate the risk profile depending on sourcing

Retinoids may alter peptide stability

Note that caloric content varies between different commercial food products, so it is important to follow the feeding instructions specific to the product

The safety profile is strong: toxic doses sit roughly 300 to 3,750 times higher than recommended therapeutic amounts, and injection site irritation remains the most commonly reported side effect

It's always a good idea to talk to a medical provider before starting any supplement, particularly if you have existing health conditions or take other medications

Research Sources: New England Journal of Medicine: Tirzepatide as Compared with Semaglutide for the Treatment of Obesity. May 11, 2025