Hydroxocobalamin (B12)
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Hydroxocobalamin (B12). Long-acting injectable form of B12 — used clinically for deficiency and cyanide poisoning.
How it works. Body converts to methyl- and adenosyl- forms as needed; binds free cyanide.
What the research supports. 2 graded claims. Strongest: Cyanide antidote (Cyanokit) (strong).
How much to take. Typical dose: 1 mg IM monthly (medical).
Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.
Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).
Common forms. Available as Capsule or softgel, Sublingual tablet or liquid, Methylated active form for sensitive individuals, Multivitamin matrix.
Key studies. 9 studies cited. The strongest are listed with links to PubMed.
Community. Experiences from people who have tried Hydroxocobalamin (B12). Anecdotes are not medical advice.
Hydroxocobalamin (B12). Long-acting injectable form of B12 — used clinically for deficiency and cyanide poisoning.
What it is
Long-acting injectable form of B12 — used clinically for deficiency and cyanide poisoning.
Food sources
Goals
How it works
Body converts to methyl- and adenosyl- forms as needed; binds free cyanide.
Pathways
- Cyanide chelation
- B12 storage form
Effects
- +Cyanide antidote (Cyanokit) supports
- +Long retention for monthly dosing supports
What the research supports
Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.
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Side effects & interactions
Common side effects
- Injection-site pain
Medication interactions
Always disclose Hydroxocobalamin (B12) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.
Check any supplement–medication combination with your pharmacist before starting.
Combines with
Pairs well
- A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
- Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.
Common forms
- Capsule or softgel
- Sublingual tablet or liquid
- Methylated active form for sensitive individuals
- Multivitamin matrix
Key studies
9 studies cited in total.
Opens current human and preclinical literature matching Hydroxocobalamin (B12) and "Cyanide antidote". Filter by RCT, meta-analysis, or year on the results page.
Opens current human and preclinical literature matching Hydroxocobalamin (B12) and "Long retention for monthly dosing". Filter by RCT, meta-analysis, or year on the results page.
Opens current human and preclinical literature matching Hydroxocobalamin (B12) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.
Discussion
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