Welcome to EarthTurns

Douglas Laboratories - Vitamin B12 - 60 Tablets

FREE Shipping
Douglas Laboratories - Vitamin B12 - 60 Tablets
EarthTurns: $17.40

Availability: In stock

2,500 mcg of pure vitamin B12*
*Results May Vary
Made by Douglas Laboratories
*Results May Vary

Douglas Laboratories - Vitamin B12

Dissolvable Tablets

No Genetically Modified Organisms (GMOs) - 60 Tablets

Douglas Labs Vitamin B12 tablets dissolve in the mouth, releasing 2,500 mcg of vitamin B-12 as cyanocobalamin.


Vitamin B12 is essential for normal energy metabolism of carbohydrates, fat and protein. As a cofactor for methylmalonyl-CoA mutase enzymes, vitamin B12 helps convert odd chain fatty acids and branched chain amino acids into succinyl-CoA, a common citric acid cycle intermediate. Vitamin B12 is also required for nucleic acid (DNA) synthesis, methionine synthesis from cysteine, and normal myelin synthesis in the nervous system. Along with vitamin B6 and folic acid, adequate levels of vitamin B12 are required to maintain normal plasma homocysteine levels. Elevated plasma homocysteine may be an independent risk factor for developing heart conditions.

There are two distinct mechanisms for intestinal vitamin B12 absorption; receptor-mediated absorption and passive diffusion. In the first, vitamin B12 attaches to a salivary “R-binder” protein which transports it into the small intestine, where vitamin B12 is released. The vitamin then binds to “Intrinsic Factor” (IF), a glycoprotein normally produced by the gastric parietal cells. This vitamin B12-IF complex is carried down to the ileum, where it binds to mucosal receptors. Finally, the complex is absorbed and bound to serum vitamin B12-binding proteins. The second absorption mechanism, passive diffusion, does not require any carriers, such as B-binder or IF. The elderly and strict vegetarians are often at risk for vitamin B12 deficiency, either due to low dietary intake or impaired absorption.

The receptor-mediated absorption pathway is subject to numerous genetic and pathologic defects which can severely impair normal vitamin B12 absorption. These defects include hereditary absence of IF production, gastric atrophy, gastrectomy, and small intestinal disorders affecting the ileum. Affected individuals depend almost exclusively on the passive diffusion pathway or by dissolving tablets in the mouth.


Vitamin B-12 tablets are indicated for individuals that desire higher intakes of the nutrient B-12 in a dissolvable tablet.

SIDE EFFECTS: No adverse side effects have been reported.

This product contains NO yeast, wheat, gluten, soy, milk/dairy, sodium, sugar, starch, artificial coloring, artificial preservatives or genetically modified organisms (GMOs).

Free shipping for all orders within the USA!

Additional Information
SKU DouglasLabs-202314-60X-7941

Directions: Adults take 1 tablet daily with meals or as directed by a healthcare professional..

Supplement Facts
Serving Size: 1 Tablet
Servings per Container: 60
Amount Per Serving %DV
Vitamin B12 (as cyanocobalamin) 2,500 mcg 41,667%

Other Ingredients: Mannitol, stearic acid, magnesium stearate and silica.

UPC Code 310539977941
No reviews yet.

    Write Your Own Review

    You're reviewing: Douglas Laboratories - Vitamin B12 - 60 Tablets

    How do you rate this product?