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Vitamin B12 tablets, provided by Douglas Laboratories®, supply 500 mcg of Vitamin B-12 in each easy to swallow tablet.
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.
Vitamin B-12 may be a useful dietary supplement for individuals who wish to increase their intake of vitamin B12.
Each tablet Contains:
Vitamin B-12...................................................................500 mcg
Adults take 1 tablet daily with meals or as directed by a healthcare professional.
No adverse side effects have been reported.
Store in a cool, dry place, away from direct light. Keep out of reach of children.
Alexis Lugo: Health & Wellness Coach
Welcome to our online store of professional dietary supplements from the USA. We have opened recently. In the near future we will expand the range of the site with new brands.
Our Delivery Policy: 7-14 days within the US.
Our Return Policy: We dont accept returns.
Our Refund Policy: We only give a full refund on damaged or defective items. We will do everything we can to replace the product as quickly as possible.
Our Cancellation Policy: We give full refunds at the request of a cancellation before the items have shipped.