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Natural Factors, B12 Methylcobalamin, 1000 mcg, 90 Chewable Tablets
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Natural Factors, B12 Methylcobalamin, 1000 mcg, 90 Chewable Tablets
(Save Image)

Natural Factors, B12 Methylcobalamin, 1000 mcg, 90 Chewable Tablets


168 Reviews
Out of Stock
  • Product Code: NFS-01242
  • UPC Code: 068958012421
  • Package Quantity: 90 Chewable Tablets
  • Dimensions: 3.6 x 1.9 x 1.9 in, 0.1 lbs (0.05 kg)
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Product Overview

  • Dietary Supplement
  • Biologically Active Form of B12
  • Support for Nerve Function, Energy Production & Red Blood Cells
  • Purity & Potency Guaranteed

Natural Factors Methylcobalamin is active immediately upon absorption, while other forms (e.g., cyanocobalamin) must be converted to methylcobalamin in a two-step process. Methylcobalamin demonstrates exceptional activity in areas where other forms are simply not active. B12 supplementation is recommended for vegetarians and those suffering from B12 deficiency.

All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.

Suggested Use

Chew and dissolve before swallowing 1 tablet under the tongue per day or as directed by a health professional.

Other Ingredients

Lactose (from milk), cellulose, croscarmellose sodium, magnesium stearate (vegetable grade).

Contains no artificial preservatives, color or sweeteners; no corn, gluten, soy, starch, wheat or yeast.


Keep out of reach of children.

Sealed for your protection. Do not use if seal is broken. For freshness, store in a cool, dry place. Protect from light.

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Supplement Facts
Serving Size 1 Tablet
  Amount Per Serving % Daily Value
Vitamin B12 (as methylcobalamin) 1000 mcg 16,667%

iHerb Customer Reviews

5 Stars
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1 Stars
Works better when put between the gum and lip - no sugar alcohols (but does contain lactose). Note: high doses of B12 may deplete iodine, iron, zinc, manganese
I don't tolerate mannitol/sorbitol used by other brands but the small bit of lactose in this seems OK. I found this one works better when put between the gum and lip - under the tongue it dissolves too fast. I'm going to try California Xtracts and Jarrow Formulas instead. 1) Pure Advantage methyl-B12 spray - ineffective (I wonder about the sorbate preservative in it); 2) InterPlexus Inc NutriSorb liquid hydroxycobalamin - effective but still needs to be 'converted' to active form - I found the one drop dose suggested on label isn't enough; 3) Solgar cyanocobalamin 1mg sublingual - dissolves too fast and not as effective as active methyl-B12; 4) Source Naturals methyl-B12 1mg sublingual - contains mannitol and sorbitol. Iodine/B12 are synergists - suggest adding/increasing either one if taking more of the other, especially long term. Same is true of other nutrients such as manganese and zinc (both need cobalt, high cobalt may deplete them) - could be why some people note headaches after taking high doses of B12 (both high and low manganese can cause migraine-headaches). High doses of B12 will also deplete iron - they are antagonists. If this review was helpful to you, please click YES below - thank you. For reviews of all the products I have purchased from iHerb, please click my username above.
Jan 20, 2014
I have been using this product for 5 months and it has made a significant difference to my energy levels and sleep pattern. Have also recommended it to my sister who is anaemic, she is much better after taking this B12.
Jun 10, 2009

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