Price Comparison
Vitamin B12
cognitive
4 of 4 vendors
| Vendor | Price | 10mg cost | Updated | Actions |
|---|---|---|---|---|
| Step One Ventures 8/10 COA ✓Ships: USCredit/debit card · Zelle Verification & shipping8/10 COA ✓Ships: USCredit/debit card · Zelle | $21.60 | $21.60Checked jul 22, 2026 | Jul 22, 2026 | Buy Vitamin B12 from Step One Ventures |
| Peptides For Less 6.5/10 COA ✓Ships: USCredit/debit card Verification & shipping6.5/10 COA ✓Ships: USCredit/debit card | $4.50 | $45.00Checked aug 13, 2026 | Aug 13, 2026 | Buy Vitamin B12 from Peptides For Less |
| Anglo Peptides 7.5/10 COA on requestShips: CanadaVisa / American Express / Discover · Interac e-Transfer Verification & shipping7.5/10 COA on requestShips: CanadaVisa / American Express / Discover · Interac e-Transfer | $29.72 | $297.16Checked jul 19, 2026 | Jul 19, 2026 | Buy Vitamin B12 from Anglo Peptides |
| Chameleon Peptides 10/10 COA ✓Ships: USCredit/debit card · Apple Pay Verification & shipping10/10 COA ✓Ships: USCredit/debit card · Apple Pay | $23.40Package size not listed | —Checked jul 31, 2026 | Jul 31, 2026 | Buy Vitamin B12 from Chameleon Peptides |
Research details
Vitamin B12 — research data
Half-life~6 days (cobalamin in plasma). Weekly to monthly injections for maintenance.
Regulatory statusFDA-approved
NCAA D1Permitted
Overview
About Vitamin B12
Mechanism of action
Essential water-soluble vitamin; cofactor for methionine synthase and methylmalonyl-CoA mutase; critical for DNA synthesis, myelin formation, red blood cell production, and neurological function.
Safety profile
Extremely safe. Rare: mild injection site reactions, acne flare, rare hypersensitivity to cyanocobalamin form. Essentially no toxicity. · Decades of use; essentially zero risk; rare allergic reaction; essential medicine; water-soluble vitamin
Related pages