How to Buy Vitamin B12 Supplements

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By Sidney
eHow Contributing Writer

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Although a deficiency in vitamin B12 is very rare, it can occur. It is most likely to occur in elderly people or those who suffer from the condition pernicious anemia, which is an inability to absorb vitamin B12. This vitamin naturally occurs in milk, yogurt, and shellfish. But if you don't eat enough of these items and your doctor recommends taking a vitamin B12 supplement, it helps to have a few tips.

Difficulty: Moderate

Instructions

Step 1

Determine what dose of B12 is right for you. According to the National Institutes of Health (see Resources), men and women over the age of 18 should take 2.4 mg of B12 daily. For people under the age of 18 years, talk with your doctor.
Step 2

Decide which type of vitamin you'll take. B12 vitamin supplements are available in soft gels and liquid form. You can purchase a B12 liquid vitamin for about $15, while capsules often cost less.
Step 3

Determine if you'll shop for vitamins online or at retail chains. The benefit of purchasing vitamins online is you can often find bargain prices. However, when purchasing these vitamins in person, you can start consuming them right away. B12 can be found at your local natural food store and even some big-box retail chains.
Step 4

Check out online bargain retailers with the Better Business Bureau. If you decide to go with an online retailer, make sure to do your homework before purchasing. Check out the company with the Better Business Bureau for a history of complaints.

Tips & Warnings

Talk with your doctor if you're taking prescription medication. According to the National Institutes of Health, some prescription medications used for acid reflux, such as Prilosec, Zantac, or Pepsid, may interfere with the absorption of B12. Make sure to talk with your doctor before taking a B12 supplement.
Don't take a B12 supplement if you are pregnant. If you're concerned about deficiencies in this supplement while pregnant or lactating, talk with your obstetrician before taking B12.