Thorne Research

Vitamin B12 (formerly known as Methylcobalamin)

$24.00

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The Promise

Identity & Quality Active methylcobalamin B12, NSF Certified for Sport®

High‑potency, tissue‑ready vitamin B12 in a vegetarian capsule with clear quality and ingredient facts.

Ingredient Identity

Vitamin B12 as methylcobalamin — the active, tissue‑ready form.

Potency & Serving

Each capsule supplies 1 mg (1000 mcg) methylcobalamin; 60 capsules per bottle.

Formulation & Excipients

Vegetarian hypromellose (cellulose) capsule with microcrystalline cellulose, leucine, and silicon dioxide.

Certifications & Use

NSF Certified for Sport®; labeled for general dietary supplementation.

Why It Works

Why this formulation Concrete formulation facts that guide selection

Specific amounts, form, and certification that affect bioavailability and practitioner decisions.*

01

Active form

Methylcobalamin is provided directly (no conversion required) as the active cofactor form of B12.

02

High dose

1 mg (1000 mcg) per capsule — a high‑potency single‑capsule amount.

03

Capsule delivery

Hypromellose (vegetarian) capsule delivers powder form ingredients.

04

Complete ingredient list

Contains only methylcobalamin plus microcrystalline cellulose, leucine, and silicon dioxide — useful for allergy/avoidance checks.

Reviews

Customer Reviews

Your Journey

How to use & precautions Practical directions, storage, and warnings from the label

Follow labeled dosing, check contraindications, and consult a practitioner when indicated.

Serving & Frequency

Suggested use

Take 1 capsule one to three times daily or as recommended by your health‑care practitioner.

Container Details

Servings per bottle

60 capsules per container.

Warnings

Allergy & pregnancy guidance

Contraindicated with history of hypersensitivity to any ingredients; if pregnant consult your health‑care practitioner before use.

Interactions

Known interactions

No known adverse interactions or contraindications at publication date.

Product education

Methylcobalamin: An Active, Bioavailable Vitamin B12 for Nerve and Energy Support*

Thorne’s Methylcobalamin provides a high-potency dose of vitamin B12 in its most active, tissue-ready form. Vitamin B12 is a foundational nutrient essential for a healthy nervous system, red blood cell formation, and energy metabolism. Unlike the more common cyanocobalamin, methylcobalamin is the form of B12 that the body can use immediately, without requiring a conversion step. This makes it a superior choice for supporting neurological function, promoting cognitive health, and maintaining optimal energy levels.*

How It Works: The Power of an Active B Vitamin

Methylcobalamin is a vital player in some of the body’s most critical processes, from the brain to the bone marrow.

Support for Nerve Health and Cognitive Function
One of B12’s most important roles is its contribution to the formation of the myelin sheath, a protective layer that insulates nerve fibers and ensures proper signal transmission. Healthy myelin is crucial for both central and peripheral nerve function. Methylcobalamin also acts as a “methyl donor,” a crucial process that supports the production of key neurotransmitters like serotonin and dopamine, which are essential for a healthy mood and sharp cognitive function.*

Fueling Energy and Red Blood Cells
Vitamin B12 is an essential cofactor for the enzymes that convert fats and proteins into usable energy, making it a cornerstone of a healthy metabolism. It is also required for the production of healthy red blood cells in the bone marrow. By supporting both cellular energy and oxygen transport via red blood cells, methylcobalamin helps to combat fatigue and promote overall vitality. As an NSF Certified for Sport® product, it’s a trusted choice for foundational support.*

  • Features the active, tissue-ready form of Vitamin B12 for superior bioavailability*
  • Promotes healthy nerve function and protects the myelin sheath*
  • Supports energy production and a healthy metabolism*
  • Essential for healthy red blood cell formation
  • Supports positive mood and sharp cognitive function*

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Serving Size: One Capsule
Servings Per Container: 60
Ingredient Amount %DV
Vitamin B12 (as Methylcobalamin) 1 mg 41,667%
Other ingredients: Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide.
*Daily Value (DV) not established.
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
PREGNANCY If pregnant, consult your health-care practitioner before using this product.
INTERACTIONS There are no known adverse interactions or contraindications at publication date.