Schmidlin et al., 2019
Many sublingual supplements provide between 1,000 mcg and 5,000 mcg per serving, although the appropriate amount depends on individual needs and should follow the product label or your healthcare provider's guidance
It is not yet FDA-approved (still in Phase 3 trials as of February 2026), so it is only available through research suppliers
Neurochem Res 22:727733 Li X, Wallin C, Weber SG, Sandberg M (1999) Net efflux of cysteine, glutathione and related metabolites from rat hippocampal slices during oxygen/glucose deprivation: dependence on gamma-glutamyl transpeptidase
Effective tracking requires objective measures
For example, you might not experience the first potential benefits until after a month of using the peptide, or you could see later benefits sooner