B12 supplements can come in a variety of forms — spray, liquid, capsule — which can make it difficult to know what to buy. That’s why we asked registered dietitians which ones they’d ...

According to the 2001-2004 National Health and Nutrition Examination Survey, 3.2 percent of those over the age of 50 have true vitamin B12 deficiency.

The bioavailability of Eligen B12 was more than double the OTC oral B12 supplement (5.09% vs. 2.16%). Eligen B12 tablets are available in 30-count bottles. For more information call (973) 532-8000 ...

Where to Buy: Amazon, CVS, Nature Made, Target, and Walgreens. ... Vitamin B12, one of eight B vitamins, plays a key role in red blood cell formation and nervous system function.