Vitamin B12Rx
Physician-prescribed B12 (methylcobalamin) injections to support energy levels, metabolism, nerve function, and overall vitality. Prescribed by a licensed U.S. provider and delivered to your door.
- Supports energy levels, metabolism, and red blood cell production
- Methylcobalamin — the most bioavailable form of B12
- Physician-prescribed — no insurance required
No membership fee · same price at every dose
From the Harmon family — trusted in health & wellness for over 50 years.
How vitamin B12 helps
B12 is an essential vitamin your body uses to make energy, form red blood cells and support the nervous system. Injectable B12 delivers it directly, bypassing absorption issues common with oral supplements.
Natural energy
Supports the way your cells turn food into usable energy.
Metabolism support
A cofactor in metabolism and healthy red blood cell formation.
Focus & clarity
Many people report sharper focus and steadier daily energy.
Direct-to-bloodstream energy & clarity
Vitamin B12 is essential for energy production, red blood cell formation and a healthy nervous system. Injectable B12 delivers it directly to your bloodstream — bypassing the absorption issues common with pills — for a more efficient boost.
- Supports natural energy and metabolism
- Bypasses oral absorption limits
- Popular for focus, clarity and vitality
One price covers everything
Provider care
Online visit, prescription & follow-ups with a licensed clinician.
Your medication
Compounded and shipped from a licensed U.S. pharmacy.
Supplies & shipping
Injection supplies included, delivered free and discreetly.
Unlimited messaging
Reach your care team anytime with questions.
Questions, answered
Vitamin B12 is $79/month for the 10 mL vial or $109/month for the 30 mL. Each is also available as a 3-month plan ($199 or $269) that lowers your effective monthly cost. One price covers your online visit, your medication from a licensed U.S. pharmacy, and free, discreet shipping — no insurance or membership required.
Vitamin B12 (cobalamin) is an essential vitamin your body uses to produce energy, form red blood cells and maintain a healthy nervous system. Many adults run low, especially with age or certain diets.
Injectable B12 is delivered directly to your bloodstream, bypassing the absorption limits of oral supplements. This makes it an efficient option for people who need a reliable boost.
It's a self-administered subcutaneous injection you give yourself at home using the supplies included with your plan. Your provider guides you on dosing and frequency.
Real physicians. Certified pharmacies.
Care from licensed U.S. physicians
- Every plan is reviewed and prescribed by a U.S.-licensed physician — never a bot or an algorithm.
- Your provider reviews your full medical history and prescribes only when treatment is appropriate for you.
- The same care team stays with you — adjusting your dose and answering questions at every step.
Only 503A-certified pharmacies
We dispense only through U.S. state-licensed 503A compounding pharmacies — the highest-certified partners we work with, following USP compounding standards.
- U.S. state-licensed 503A compounding pharmacies
- Tested for purity and potency
- Shipped free and discreetly to your door
Results, or your money back.
Follow your provider's plan for 90 days. If you don't see progress, we'll refund your program — and you only ever pay if a provider prescribes treatment.
Refund covers the Harmon program fee for your first 90 days when the prescribed plan is followed; already-shipped compounded medication cannot be returned. Full terms provided at checkout.
Important safety information
Prescription products require an online consultation with a licensed provider who determines if treatment is appropriate. Vitamin B12 injections are not suitable for everyone and may cause side effects. Compounded medications are not FDA-approved. This page is general information, not medical advice; individual results vary.