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B Vitamins Reviewed by ConsumerLab.comProduct Reviews

B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)

Find the Best B Complex and B Vitamin Supplements

Tests Reveal Best and Worst B Vitamin Supplements and Why Current Labels Often Mislead

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Brands compared in report

365 Folic Acid
Bluebonnet EarthSweet Chewables Methylcobalamin
Country Life Vitamin B 12
CVS Health B12
CVS Health Niacin
Doctor's Best Benfotiamine
Douglas Laboratories Methyl Folate
Dr. David Williams ZemBright Mood Plus
Finest Nutrition [Walgreens] Folic Acid
Finest Nutrition [Walgreens] Niacin
GNC B-Complex
GNC Vitamin B-12
Jarrow Formulas Methyl Folate
KAL Pantothenic Acid
Kirkland Signature [Costco] Signature B-Complex
Klaire Labs Vitamin B6
Life Extension Vitamin B3 Niacin
MegaFood® Balanced B Complex
Member's Mark® [Sam's Club] Niacin
Natrol Biotin
Natural Factors B12
Natural Factors Vitamin B3
Nature's Bounty B-12 1000 mcg
Nature's Bounty B-12 Quick Dissolve
Nature's Bounty Niacin
Nature's Bounty Quick Dissolve B-12 - Natural Cherry Flavor
Nature's Life Biotin
Nature's Way Vitamin B2
NOW Niacinamide
NutriCology Pantethine Vitamin B-2
Pure Encapsulations B12 Liquid q full dropper
Puritan's Pride Folic Acid 800 mcg
Puritan's Pride Niacin
Puritan's Pride Sublingual B-12 Microlozenges 500 mcg
Rexall B-12
Rite Aid Pharmacy Folic Acid
Shaklee® B-Complex
Solgar Sublingual Vitamin B12
Source Naturals B-6
Spring Valley [Walmart] B-12 - Natural Cherry Flavor
Spring Valley [Walmart] Folic Acid
Spring Valley [Walmart] Niacin
Sundown Naturals Folic Acid
Swanson Super Stress B-Complex with Vitamin C
Swanson Ultra Vitamin B-12
Terry Naturally P-5-P/Mag
The Vitamin Shoppe B-1 Thiamin
Thorne Research Basic B Complex
Vitacost Biotin
Vitafusion B Complex
Vitamin World Folic Acid
Vitamin World Sublingual B-12
Wonder Laboratories Folic Acid

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More about this report

B vitamins are popular supplements as they play an essential role in energy production and the proper functioning of the body — including memory. While most people get enough B vitamins from their food, some don't get enough including those who are older, take medicine that lowers stomach acid, are pregnant, or have certain genetic mutations.  
So which are the best B-complexes and single B vitamins?'s tests of 50 B-complex and single B vitamin supplements showed that 3 products contained much more of one or more B vitamins than listed. In fact, it was discovered that taking a popular B-complex would cause you to unexpectedly get 50% more than the tolerable upper intake level of folate. Furthermore, the science regarding daily vitamin requirements has changed, but the FDA has given companies until 2018 or later to update their labels. As a result, you may be getting a lot more of certain B-vitamins than you need.

You must be a member to get the full test results along with recommendations and quality ratings. You will get results for 32 B vitamin and B-complex supplements selected by and 18 others which passed testing in its voluntary Quality Certification Program. Also listed are five products similar to ones that passed testing but are sold under different brand names. 

In this comprehensive review, you'll discover:
    • Which B vitamin supplements failed testing and which passed
    • Cost comparisons and quality ratings of B vitamin supplements
    • Information on what B vitamin supplements can and cannot do for you -- some may reduce memory decline!
    • Important differences among forms of B vitamins, such as those of niacin (nicotinic acid, niacinamide, and inositol hexanicotinate), folate (natural folate, folic acid, and L-5-methyltetrahydrofolate), and B-12 (methylcobalamin and cyanocobalamin).
    • Use and dosage information for thiamin, niacin, vitamin B-6, B-12, biotin, folate (folic acid), and pantothenic acid.
    • How amounts of B vitamins in supplements compare to the amounts you actually need - the results may surprise you!
    • What you need to know about new intake guidelines — and why you shouldn't rely on Daily Values (DVs) listed on labels 
    • Side effects and potential drug interactions with B vitamins
    • Safety concerns with B vitamins, and how to use them safely

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Related questions and answers

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