However, according to bodybuilder forums, hCG is also important in restoring testicles to their normal size, as often, after a period of AAS use, an athletes testicles can shrink
Only pharmaceutical-grade peptides are fit for human use , as the purity criteria for research-grade materials are generally much less rigorous, partially incomplete, and/or poorly followed, per one study
Pharmacol Rev 41:143210 Corpas FJ, Barroso JB, Carreras A, Valderrama R, Palma JM, Len AM, Sandalio LM, del Ro LA (2006) Constitutive arginine-dependent nitric oxide synthase activity in different organs of pea seedlings during plant development
Rosa Caballero, stated that the allergens involved in vitamin B12 reactions is likely to be a hapten, a small molecule that can trigger an immune response when it binds to a larger carrier protein