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21st Century Health Care, B-12, Prolonged Release, 1000 mcg, 110 Tablets

By 21st Century Health Care

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In Stock
  • Product Code: CEN-21104
  • UPC Code: 740985211045
  • Package Quantity: 110 Tablets
  • Dimensions: 1.8 x 2.4 x 3.7 in, 0.15 lbs (0.07 kg)

Product Overview

  • 10% Free
  • Vitamin Supplement
  • Promotes Tissue Growth & Maintenance and Is Essential for Red Blood Cell Formation
  • New! Easy to Swallow Smaller Tablet
  • 21st Century...For a Healthier Future
  • Gluten Free
  • Laboratory Tested - Guaranteed Quality

21st Century Vitamin B-12 (Cyanocobalamin) promotes maintenance and growth of tissue and is essential for red blood cell formulation. Prolonged release vitamins slowly release nutrients into the body over an extended period of time.

Suggested Use

Take one (1) tablet daily with any meal for maximum results, or as directed by your healthcare provider. Do not exceed recommended dosage.

Other Ingredients

Cellulose, stearic acid, hydroxypropyl methylcellulose, silicon dioxide, magnesium stearate.

No added sugar, salt, yeast, preservatives, artificial flavors or colors.


Keep out of reach of children. Do not use if product appears to be tampered with or seal is broken. Store at room temperature.

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Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving: % DV†
Vitamin B-12 (as Cyanocobalamin) 1000 mcg 16667%
Calcium (as Calcium Carbonate) 100 mg 10%
†Percent Daily Value (DV) based on a 2,000 calorie diet.

iHerb Customer Reviews

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1 Stars

Great deal!

Posted by Reviewer3213655 on Apr 11, 2010

I just started taking them a couple weeks ago, but so far, so good. I feel more energetic already.

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3 people found the following review helpful

Don't take with any other B vitamin

Posted by Tranita on Aug 08, 2012

I ended up having to look up the reason why my urine had started to become so highlighter yellow and it was because i was taking another B vitamin. I read that once your body has taken in all the B vitamin it needs then the rest is just withdrawn from your body. It is disposed of through your urine. Be careful.

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1 person found the following review helpful

Not good incredients

Posted by Reviewer2646612 on Nov 14, 2013

These helped me for a while (placebo?), but I needed to change to other label. Cyanocobalamin isn't a good ingredient as it solubles to badly on others.

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1 person found the following review helpful


Posted by Reviewer1356117 on Nov 23, 2013

This stuff is great. Lots of Energy, no tummy aches. If you are especially worried about not getting enough b12 because you are on a vegetarian/vegan/raw diet, this is a great supplement!

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Posted by 5488881324633768672 on Dec 01, 2013


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