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Home > Shop By Brand > Progressive Labs > B-12 1000 mcg 60 Tablets

B-12 1000 mcg 60 Tablets

Brand: Progressive Labs
Item # PL1017
Our Price: $15.00
Free Shipping Included for all US addresses and territories
B-12 Intrinsic Factor 60 Capsules
Regular Price: $22.00
Our Price: $22.00
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B12 Liquid (Methylcobalamin) 2 fl. oz (60 ml)
Regular Price: $22.00
Our Price: $22.00
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B-12 1000 mcg 60 Tablets
B-12 1000 mcg 60 TabletsB-12 1000 mcg 60 TabletsB-12 1000 mcg 60 TabletsB-12 1000 mcg 60 TabletsB-12 1000 mcg 60 TabletsB-12 1000 mcg 60 Tablets

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Product Q & A
MFG # 976
UPC # 351821009766
Official Website: http://www.progressivelabs.com

Vitamin B-12 and folic acid are intimately involved as vitamin cofactors in the cellular production of nucleic acids, protein and certain amino acids. Physiological anabolic functions of Vitamin B-12 and folic acid include DNA synthesis, RNA synthesis, nucleic acid metabolism, protein synthesis, cell division and amino acid synthesis (methionine, serine, glycine).


The absorption of Vitamin B-12 is governed by the intrinsic factor, secreted from parietal cells of the stomach wall as a normal part of gastric juice. A failure in any stage in the absorption of the vitamin can render it unavailable. For instance, one third of people over 60 who no longer secrete gastric acid are unable to absorb Vitamin B-12 from food because they are unable to split B-12 from the protein complex to which it is attached. If the gastric juice of a person lacks the intrinsic factor necessary for absorption of Vitamin B-12, there is no uptake of the vitamin at all from the amounts normally provided in food. However, if amounts about 1000 times the normal dosage are given, sufficient amounts to meet the needs of an individual may pass through the wall by diffusion.


The efficiency of absorption appears to diminish with increase in age, with a pyridoxine deficiency resulting from a decreased synthesis of intrinsic factor, with an iron inadequacy and in hypothyroidism.


Considering the multiple factors which may inhibit the absorption of the vitamin, researchers have considered an alternate route of absorption. One route considered is sublingual, the second most rapid route next to direct injection of the substance into the body.






These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

Each tablet contains:


Vitamin B-12 (cyanocobalamin) 1000 mcg.


Folic acid 400 mcg.


Other ingredients: mannitol, natural cherry flavor.



Allergy Information - Product Details
  • No Artificial Colors
  • Corn Free
  • Preservatives Free
  • Soy Free
  • Wheat Free
  • Yeast Free

One tablet daily, or more as directed by a doctor. Dissolve in mouth under tongue, use as a lozenge, chew or swallow whole.

Consult your healthcare professional

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