They are not FDA-approved as weight loss treatments
While both peptides are frequently discussed together and are even available as a BPC 157 + TB 500 blend their mechanisms, primary research areas, and structural profiles are meaningfully distinct
The drugs that were imported from China were unapproved peptides and weight loss drugs labeled for research purposes only. Products bearing this label are not intended to be used by humans, but bad actors use them as a legal loophole to sell consumers unapproved drugs
If the peptide were made in the body, Szabo and his colleagues wrote, one would expect that over the course of decades, researchers would have identified the gene that encodes it, the cells that make it, the receptors that it interacts with, and the levels at which it occurs in the body
Extreme deficits (800-1,000 calories below maintenance) are unnecessary and counterproductive because they increase muscle catabolism and metabolic adaptation