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"Some plant-based options like fortified cereals, plant milks and nutritional yeast also contain it

Last reviewed: May 14, 2026 Last updated: May 14, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

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Reported forms include research powder, oral capsules, and transdermal preparations (often DMSO-based), and the oral-versus-transdermal debate in forums frequently repeats the now-retracted claim that Dihexa is reliably brain-penetrant when taken orally