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and methionine, which is similar to inositol, but also amplifies the combination

J Neurol 270:477485 Phokaewvarangkul O et al (2023) Homocysteine, vitamin B metabolites, dopamine-substituting compounds, and symptomatology in Parkinsons disease: clinical and therapeutic considerations

Mostly, peptides are used by guys hitting the gym and bodybuilding, but theyre also relevant if youre just getting a bit old

The most concerning part is that Vitamin B12 deficiency is more common than most people think, and it can affect people of all ages

Peptides may be available as FDA-approved drugs or, in certain cases, as compounded preparations under Sections 503A and 503B of the Federal Food, Drug, and Cosmetic Act (FDA, 2021)