THORNE Vitamin B12 1,000 mcg Methylcobalamin, 60 Capsules for Nerve & Heart Support

THORNE Vitamin B12 is a methylcobalamin supplement designed to support healthy heart, blood cell, nerve, and sleep functions, with 1,000 mcg of active B12 in each capsule.

• 1 mg (1,000 mcg) methylcobalamin per capsule — provides vitamin B12 in its active form.
• Supports normal homocysteine levels — helps support healthy cardiac function, blood cell formation, and optimal nerve function.
• Supports circadian rhythms and restful sleep — also supports healthy methylation processes.
• Third-party tested and certified — verifies package contents against the label and checks for unsafe contaminant levels.
• 60 capsules per bottle — a defined capsule count for planning your supplement routine.
• Trusted by 100+ professional sports teams; ranked the #1 most recommended clinical brand in a 2026 independent US survey.

Vitamin B12 has roles in several normal body processes, so choosing a supplement can mean looking at both its form and the functions it is intended to support. THORNE provides methylcobalamin in a capsule and connects its B12 formula with cardiac function, blood cell formation, nerve function, circadian rhythms, and methylation. The product is for people seeking supplemental B12 with those specific support goals.

What functions does THORNE Vitamin B12 support?

THORNE Vitamin B12 is formulated to support a normal homocysteine level, healthy cardiac function, blood cell formation, and optimal nerve function. It is also designed to help maintain normal circadian rhythms for restful sleep and support healthy methylation processes. These are structure and function support claims; the supplement is not presented as a treatment for a disease.

• Homocysteine support is connected to the product’s stated cardiac function benefits.
• Sleep support is tied to maintaining normal circadian rhythms.
• Methylation support is an additional stated role of the formula.

What form of vitamin B12 is in each capsule?

Each THORNE Vitamin B12 capsule contains 1 mg of vitamin B12 as methylcobalamin. Methylcobalamin is an active form that the product identifies as more efficiently used by the body than other forms such as cyanocobalamin. This makes the form of B12 a key distinction for shoppers comparing supplement labels.

• Active form: methylcobalamin.
• Amount: 1 mg of vitamin B12 in each capsule.
• Comparison named for the formula: cyanocobalamin.

How many capsules are included, and how is the product tested?

Each bottle contains 60 capsules. THORNE’s third-party testing and certification verify that the contents match the label and check that contaminants are not present at unsafe levels. This gives shoppers a specific quality-control detail to consider alongside the ingredient and capsule count.

• Pack quantity: 60 capsules.
• Testing checks both label-to-package match and contaminant levels.
• THORNE is trusted by more than 100 professional sports teams.

THORNE Vitamin B12 is suited to adults looking for methylcobalamin in capsule form and interested in the listed heart, blood cell, nerve, circadian rhythm, sleep, and methylation support. The product is a 60-capsule B12 supplement with 1 mg of methylcobalamin per capsule and third-party testing and certification.

Ingredients

One Capsule Contains: Vitamin B12 (as Methylcobalamin) 1 mg. Other Ingredients: Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide.