Active B12 1000 by Seeking Health provides two active coenzyme forms of vitamin B12 in a lower dose of 1,000 mcg (1 mg) per lozenge. Methylcobalamin and adenosylcobalamin, the two active coenzyme forms of vitamin B12, serve an important role in red blood cell formation, methylation reactions, brain and nervous system function, energy metabolism and immune system regulation.* Active B12 1000 offers a lower-dose alternative to Seeking Health’s popular Active B12 5000. Each lozenge provides 1000 mcg of the active “coenzyme” forms of vitamin B12, methylcobalamin and adenosylcobalamin, without artificial flavors or colors. Vitamin B12 is required for proper red blood cell formation, neurological function, and DNA synthesis.* Vitamin B12 functions as a cofactor for methionine synthase and L-methylmalonyl-CoA mutase. Methionine synthase catalyzes the conversion of homocysteine to methionine. Methionine is required for the formation of SAMe (S-adenosylmethionine), an important methyl donor.* As “coenzyme” forms, methylcobalamin and adenosylcobalamin are the forms required by certain B12-dependent enzymes and reactions within the body. Methylcobalamin supports the formation of healthy red blood cells, a healthy immune system, cognitive function, and homocysteine regulation.* Adenosylcobalamin is the mitochondrial form of B12 and supports energy metabolism and endurance levels.* It may be more difficult for certain individuals to synthesize the active forms of B12 from other dietary or supplemental forms such as cyanocobalamin.* Vitamin B12 is naturally present in seafood, shellfish, liver, eggs and dairy products. It may be harder for vegetarians and vegans to meet their daily needs for vitamin B12 from food sources without relying on supplements or fortified foods.* Key Benefits and Actions:

  • May help support the normal conversion of homocysteine to methionine
  • May help support healthy methylation and metabolism
  • May help support cognitive health
  • May help support healthy energy levels

This item cannot be shipped internationally. We sincerely apologize for any inconvenience. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Individual results may vary.

Label Information

Supplement Facts
Serving Size: 1 Lozenge
Servings Per Container: 60
Amount Per Serving %DV
Vitamin B12 (800 mcg as methylcobalamin, 200 mcg as adenosylcobalamin) 1000 mcg 16,667%
Daily Value Based on a standard 2,000 calorie daily intake
  • Suggested Use: Take 1 lozenge daily or as directed by your healthcare professional. Lozenge may be broken into smaller pieces if lower dosage is desired.
  • Storage: Keep closed in a cool, dry place out of reach by children.
  • Contraindications: Children and pregnant or lactating women should consult their healthcare practitioner prior to use. Do not use if tamper seal is broken or damaged.
  • Other Ingredients: Xylitol, ascorbyl palmitate, natural orange flavor and silica.
  • Contains No: Gluten, dairy, egg, fish, shellfish, nuts, or wheat.