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Schizophrenia For decades ago, there was a report of MTHFR enzymatic activity reduction in two schizophrenia patients which were 18 and 21% percent of the normal level, respectively, while homocysteine remethylation was also defected 42

The human tripeptide GHK (glycyl-L-histidyl-L-lysine) in the prevention of oxidative stress and degenerative conditions of aging: Implications for cognitive health.International Journal of Molecular Sciences, 18(7), 1987

Swisher SG, Maish M, Erasmus J, Correa AM, Rice D, Putnam JB, Smythe WR, Walsh G, Vaporciyan A, Roth J

This suggests that while the body does break some of it down, taking enough of the right form can eventually "move the needle." However, relying on high doses of standard capsules may not be the most efficient or cost-effective way to support your health