Both are widely known for their antioxidant properties, skin-brightening benefits, and role in boosting immunity
Koi Peptides was our best overall, with research-grade material listed, high stated purity, and a certificate of analysis for each batch
Read our BPC-157 vs TB-500 comparison
However, in recent years it also has become fashionable to inject glutathione intravenously with a cocktail of vitamins so that the skin is much lighter and more consistent
[22] Refrigeration is not strictly required but may prolong shelf life if temperature excursions are common
Collectively the EARs, RDAs, AIs, and ULs are referred to as dietary reference intakes (DRIs)