In fact, a 2008 study found that after taking a 1,000 mcg oral supplement, only approximately 1.3% (or 13 mcg) of B12 was absorbed into the bloodstream
10.1089/acm.2006.12.881 Summary Keywords vitamin B12, efficacy, bioavailability, therapeutic approaches, meta-analysis, cobalamin Citation Mazur M, Ndokaj A, Salerno C, Vallone J, Ardan R, Bietolini S, Carrouel F, Wilk A, Sarig R, Ottolenghi L and Bourgeois D (2025) Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis
Always consult with your healthcare provider to determine whether these therapies are right for you
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(Midi does not prescribe this or other unapproved peptides.) What the science says: The majority of research on Epitalon is from animal studies and small human observational studies, not large, randomized controlled trials
The GLP-1 withdrawal symptom guide covers what to expect
