B-12 (Methylcobalamin)

Methylcobalamin is an active form of vitamin B-12. Each lyophilized vial contains 12,000 mcg in total. A licensed provider reviews your symptoms, health history and relevant blood tests to decide whether B-12 replacement fits your care.
Pharmacy shipping: $20 added once per medication order.
About this treatment
Support your blood and nerves when B-12 is low.
Methylcobalamin is a biologically active form of vitamin B-12. Replacement can help address a deficiency and restore a nutrient needed for healthy blood cells and normal nerve function.
Support healthy red blood cells
Vitamin B-12 helps your body make healthy red blood cells. When a deficiency causes anemia, it can leave you feeling tired and weak. Treating the deficiency addresses that underlying nutritional problem.
Give your nerves an essential nutrient
B-12 supports the protective covering and normal function of nerves. Low levels can cause numbness, tingling or balance changes, sometimes without anemia. Recognizing and treating a deficiency promptly matters because prolonged deficiency can damage the nervous system.
Research and product information
These benefits concern B-12 deficiency. The cited trial used oral methylcobalamin after gastric bypass, not this lyophilized vial. The listed 12,000 mcg is total vial content, not a concentration or an instruction to administer the entire contents. Follow the pharmacy's instructions for the specific product.
- NIH Office of Dietary Supplements: vitamin B12 consumer fact sheet
- NIH Office of Dietary Supplements: vitamin B12 health professional fact sheet
- Schijns et al. Oral methylcobalamin and vitamin B12 replacement after Roux-en-Y gastric bypass (2018)
Sources checked .
Your path to B-12 (Methylcobalamin)
Share your health history
Tell your provider about your symptoms, medicines, diet and any recent B-12 blood tests.
Provider review
A licensed provider decides whether replacement is appropriate and sets the treatment plan.
Follow your pharmacy label
Use the preparation and administration instructions supplied for your prescription, and ask the pharmacist about handling and storage.
About this treatment
What it is
A lyophilized, or freeze-dried, methylcobalamin preparation containing 12,000 mcg of vitamin B-12 per vial. This is the total vial content, not a concentration after preparation or an instruction to use the entire vial at once.
Who it's for
Adults whose provider identifies a need for B-12 replacement after reviewing their symptoms, history and laboratory results.
Forms we dispense
Lyophilized vial · 12,000 mcg total
A licensed provider reviews your history and requests labs when clinically appropriate before prescribing.
Prescriptions are coordinated with our licensed US pharmacy partner. Follow the instructions supplied for your specific prescription.
We do not sell pharmaceuticals online. Every prescription comes after a full provider review.
