Vitamin B12 Dosage — Strengths, Typical Dose & Max Dose
Complete dosing reference for Vitamin B12 (Cyanocobalamin/Methylcobalamin): available forms and strengths, typical adult dose, titration schedule, max dose, and dosing in special populations.
Verified pharmacies compete for your prescription. Free · No account · Bids in 1–4 hrs.
Chain retail
$12/mo
GoodRx typical
~$7/mo
Via Script Unlock
$3/mo
Save up to 72% — ~$108/year for chronic use.
Vitamin B12 Dosing
Vitamin B12 dosing depends on your indication, kidney and liver function, age, and other medications you are taking. Your prescriber selects the starting dose and titrates based on clinical response.
Ask your prescriber for the Vitamin B12 package insert or the FDA-approved prescribing information for full dosing detail.
Vitamin B12 pricing varies dramatically by pharmacy
The same Vitamin B12 prescription can cost $3 at one pharmacy and $12 at another in the same zip code. Chain pharmacies typically charge the most. Script Unlock lets verified independent and mail-order pharmacies compete for your prescription — the winning bid is usually 72% below chain retail.
- Free — no membership, no account, no credit card upfront
- Bids in 1–4 hours from verified US pharmacies
- Locked-in price — no PBM renegotiation at checkout
- Delivery or local pickup
Related Vitamin B12 pages
Medical disclaimer: Dosage information on this page is for reference only and is not a substitute for medical advice. Your prescribing doctor determines the appropriate Vitamin B12 dose for your condition, kidney and liver function, other medications, and clinical response.