Methylcobalamin is a tissue-ready form of vitamin B12. It supports cardiovascular function, normal sleep cycles, red blood cell function, and nerve function.* Many vitamin B12 supplements contain cyanocobalamin as the active ingredient, which the liver must first ""detoxify"" and modify to form methylcobalamin – an active form of vitamin B12 that is essential for processes involved in cardiac function, sleep, red blood cell formation, and nerve function.* Thorne's Methylcobalamin provides vitamin B12 in its already biologically active and tissue-ready form.* Clinical evidence indicates that the body uses methylcobalamin more efficiently than cyanocobalamin.*

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 professional before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date.