It is a substance your body naturally produces, and supplementation simply supports optimal levels
Factors like pollution, stress, UV radiation, smoking, alcohol, poor diet, and strenuous exercise can significantly deplete your bodys natural glutathione levels
However, certain special situations, such as immature blood-brain barrier (BBB) in infants, compromised BBB, high-dose exposure, small molecular weight, few aromatic amino acids, light hydrophobicity, light cationic properties, transport mechanisms, and indirect effects, can affect BBB transitions (Domenger et al
(2018) Stable Gastric Pentadecapeptide BPC 157: Novel Therapy in Gastrointestinal Tract
Peptides are often synthesized in small batches, which can drive up production costs compared to mass-produced pharmaceuticals
They are shipped in a lyophilized powder form for a very specific reason: stability