Best B-Complex 2026: Ranked by Active Forms & B6 Dose per Serving
For most people, buy Nature Made Super B-Complex: it is USP Verified, stays under every vitamin limit we check, and costs $0.083 a day. A B-complex helps if you are low in B vitamins; most people in the US get enough from food (NIH).
By Erin Rose Updated October 19, 2026 How we score
Costs are list prices at each brand’s store or Vitacost, checked October 13, 2026. Amazon’s price can differ.
Our pick for: Most people
- Vitamin B6
- 2 mgUnder the 12 mg EU line
- Niacin
- 25 mgUnder the NIH 35 mg limit
- Testing list
- USP VerifiedContents and purity; listing checked September 22, 2026. Not found on NSF Certified for Sport, Informed Sport, Informed Choice or NSF/ANSI 173
- A day
- $0.0831 tablet; $11.59 for a 140-tablet bottle at Vitacost
Why we pick it It is the only B-complex we score that is both on a public testing list and under every limit we check. Thorne #12 and #6 are on testing lists too, but over the limits. It has 665 mcg DFE of folate and 15 mcg of B12, enough to meet the adult daily needs.
What to know It uses folic acid and cyanocobalamin, the standard forms. NIH says B12 absorbs the same in any form, and methylfolate absorbs as well as or better than folic acid.
Nature Made’s own site lists it as discontinued. Amazon still sells it; if it sells out, our pick is Nature's Bounty Super B-Complex.
Which B-complex is right for you?
Our pick fits most people. These are the other choices, and what each one trades.
Want methylfolate and methyl B12?
Thorne B-Complex #12 has both, and it is on NSF/ANSI 173, so a lab checks what is in the capsule. But one capsule has 23.4 mg of vitamin B6, about twice the EU’s 12 mg adult limit, and 80 mg of niacin, over NIH’s 35 mg limit. It costs $0.43 a day, about 5 times our pick, for a 60-capsule bottle.
Thorne B-Complex #12
5.0/10 · $0.43 a day
Methylfolate + methylcobalamin · NSF/ANSI 173
B6 23.4 mg · niacin 80 mg
Want the lowest cost?
Nature's Bounty Super B-Complex is $0.079 a day for a 150-tablet bottle and stays under the B6 and niacin limits. We found it on no testing list. It has 1,000 mcg of biotin, so tell your lab before blood tests.
Nature's Bounty Super B-Complex
7.0/10 · $0.079 a day
Folic acid + cyanocobalamin · no testing list
B6 5 mg · biotin 1,000 mcg
Want methyl forms with low B6?
Thorne Basic B has methylfolate and methyl B12 with 10 mg of B6, under the EU line, but 140 mg of niacin, 4 times NIH’s 35 mg limit for supplements. Its niacin is niacinamide, which does not cause the flushing that limit is based on; NIH still counts it. It is on no testing list we check.
Thorne Basic B Complex
3.5/10 · $0.45 a day
Methylfolate + methylcobalamin · no testing list
B6 10 mg · niacin 140 mg
Having blood tests? Tell the lab about biotin.
High doses of biotin can make some blood tests read wrong, including thyroid and heart-attack tests (NIH, FDA). Our pick has 30 mcg a tablet.
Take metformin, an acid reducer, methotrexate or a seizure medicine?
Ask your pharmacist first. Metformin and acid reducers can lower B12, and seizure medicines and methotrexate change how your body uses B vitamins (NIH).
Pregnant, or could become pregnant?
Ask your doctor. NIH and the CDC advise 400 mcg of folic acid a day. A B-complex is not a prenatal vitamin.
B-complexes we compared
All 12 we score, ranked by score. Costs are a day and a bottle at list price; B6 is a day’s serving; “over the limit” means the EU’s 12 mg for B6 or NIH’s 35 mg for niacin. The data is in our free data file.
| B-complex | A day | B6 | Forms, testing, limits |
|---|---|---|---|
| Nature Made Super B-Complex10.0/10 | $0.083$11.59 a bottle | 2 mg | Our pick · USP Verified · under every limit |
| Nature's Bounty Super B-Complex7.0/10 | $0.079$11.83 a bottle | 5 mg | Folic acid + standard B12 · no testing list · under every limit |
| Thorne B-Complex #125.0/10 | $0.43$26.00 a bottle | 23.4 mg | Methylfolate + methyl B12 · NSF/ANSI 173 · B6 and niacin over the limit |
| Thorne B-Complex #65.0/10 | $0.43$26.00 a bottle | 100 mg | Methylfolate + methyl B12 · NSF Certified for Sport · B6 and niacin over the limit |
| NOW Vitamin B-504.0/10 | $0.100$9.99 a bottle | 50 mg | Folic acid + standard B12 · no testing list · B6 and niacin over the limit |
| Jarrow Formulas B-Right3.5/10 | $0.28$27.99 a bottle | 35 mg | Methylfolate + methyl B12 · no testing list · B6 over the limit |
| Thorne Basic B Complex3.5/10 | $0.45$27.00 a bottle | 10 mg | Methylfolate + methyl B12 · no testing list · niacin over the limit |
| Solgar B-Complex '50'3.0/10 | $0.13$12.69 a bottle | 50 mg | Folic acid + standard B12 · no testing list · B6 and niacin over the limit |
| NOW Vitamin B-1002.0/10 | $0.17$17.14 a bottle | 100 mg | Folic acid + standard B12 · no testing list · B6 and niacin over the limit |
| Solgar B-Complex '100'2.0/10 | $0.19$18.92 a bottle | 100 mg | Folic acid + standard B12 · no testing list · B6 and niacin over the limit |
| Pure Encapsulations B-Complex Plus2.0/10 | $0.36$43.26 a bottle | 16.7 mg | Methylfolate + methyl B12 · no testing list · B6 and niacin over the limit |
| Country Life Coenzyme B-Complex2.0/10 | $0.39$47.26 a bottle | 50 mg | Methylfolate + methyl and adenosyl B12 · no testing list · B6 and niacin over the limit |
How much vitamin B6 is too much
NIH sets the adult upper limit for B6 at 100 mg a day. In 2023 the EU’s food safety agency (EFSA) set 12 mg. High B6, usually from supplements, can cause nerve damage felt as tingling or numbness (Muhamad 2023). 9 of the 12 products we score have more than 12 mg in a day’s serving, and 3 reach NIH’s 100 mg. Add up the B6 on every label you take.
What the forms mean
- Folate. Labels say folic acid or methylfolate (5-MTHF, the form your cells use). NIH says methylfolate absorbs as well as or better than folic acid. For people with the MTHFR gene variant, which slows folate conversion, NIH calls the research inconclusive.
- B12. Labels say cyanocobalamin or methylcobalamin. NIH says no evidence shows that B12 absorption differs by form.
- Before pregnancy. NIH reports that the CDC advises 400 mcg of folic acid a day, not methylfolate, for women who could become pregnant.
So we show each product’s forms in the table but do not score them. We score B6, niacin, testing and cost.
| Item | Value |
|---|---|
| Nature Made Super B-Complex | 2 mg |
| Nature's Bounty Super B-Complex | 5 mg |
| Thorne Basic B Complex | 10 mg |
| Pure Encapsulations B-Complex Plus | 16.7 mg |
| Thorne B-Complex #12 | 23.4 mg |
| Jarrow Formulas B-Right | 35 mg |
| NOW Vitamin B-50 | 50 mg |
| Solgar B-Complex '50' | 50 mg |
| Country Life Coenzyme B-Complex | 50 mg |
| NOW Vitamin B-100 | 100 mg |
| Solgar B-Complex '100' | 100 mg |
| Thorne B-Complex #6 | 100 mg |
Does a B-complex work?
It fixes a shortage. For people who are not low, the trials found little.
- Heart: B vitamins lower homocysteine, a blood marker, but a Cochrane review of 15 trials and 71,422 people found no change in heart attacks or deaths. Strokes were slightly fewer, 4.3% against 5.1% (Martí-Carvajal 2017).
- Energy: NIH says B12 does not appear to improve performance in people with enough B12. Trials that found a lift used self-ratings and multivitamin products, and one was paid for by Bayer (Kennedy 2010).
- Stress and mood: a review of 12 trials found a small drop in stress scores and no change in anxiety (Young 2019; Bayer Healthcare paid part).
- Memory: a Cochrane review found probably little or no effect on thinking in healthy older adults (Rutjes 2018).
Every claim, graded: does a B-complex work?
Questions people ask
What is the best B-complex?
For most people, Nature Made Super B-Complex. Want methylfolate and methyl B12: Thorne B-Complex #12. Lowest cost: Nature's Bounty Super B-Complex.
Is a "B-100" better?
Not as far as we found. “B-100” means about 100 mg of several B vitamins, including B6, which is NIH’s upper limit for adults and 8 times the EU’s 12 mg. We found no trial showing a B-100 does more for people who are not low in a B vitamin. Tingling or numbness in your hands or feet? Stop the B6 and call your doctor.
Why rank by form and B6 dose, not price?
Because many B-50 and B-100 bottles carry 50 to 100 mg of B6, and B6 is the B vitamin linked to nerve damage at high doses. Form is shown but not scored: NIH says B12 absorbs the same in any form, and methylfolate absorbs as well as or better than folic acid.
Is Nature Made Super B-Complex discontinued?
Nature Made’s site lists it as discontinued. Amazon and other stores still sell it, and USP’s list names it (checked September 22, 2026). If it goes away, use the same checks: B6 at 12 mg or less, niacin at 35 mg or less, and a listing on a public testing list.
Do I need a B-complex?
Most people in the US get enough B vitamins from food (NIH). Some people are more likely to be low in B12: older adults, vegans and vegetarians, people with stomach conditions, and people who take metformin or acid reducers (NIH). If you are one of them, ask your doctor about a blood test and the right dose before you buy.
Should I choose methylfolate instead of folic acid?
We found no proof that either form works better for your health. NIH says methylfolate absorbs as well as or better than folic acid. For people with a common gene variant (MTHFR 677C>T) NIH calls the research on methylfolate inconclusive. If you could become pregnant, the CDC advises 400 mcg of folic acid a day even with that variant (NIH), and the USPSTF advises 400 to 800 mcg. Ask your doctor.
How we score
Five marks: does a day’s serving stay under the B6, niacin and folic acid limits and meet the B12 and folate needs; is the product on a public testing list; what a day costs at list price against the cheapest; does the label state every amount; and the brand’s FDA recall record. Dose and testing are worth up to 3 points each, cost up to 2, label and recalls up to 1 each, for 10 in all. More on our method.
Sources
- NIH Office of Dietary Supplements fact sheets for health professionals, read October 13, 2026: vitamin B6, vitamin B12, folate, niacin, biotin.
- EFSA NDA Panel. Scientific opinion on the tolerable upper intake level for vitamin B6. EFSA Journal. 2023;21(5):e08006. Full text
- Muhamad R, et al. Vitamin B6 and peripheral neuropathy (systematic review). Nutrients. 2023. PubMed 37447150
- FDA. Biotin interference with troponin lab tests (page current as of June 21, 2022). fda.gov
- Martí-Carvajal AJ, et al. Homocysteine-lowering interventions for preventing cardiovascular events. Cochrane Database Syst Rev. 2017. PubMed 28816346
- Kennedy DO, et al. Psychopharmacology. 2010. PubMed 20454891 (paid for by Bayer Consumer Care). Young LM, et al. Nutrients. 2019. PubMed 31527485 (Bayer Healthcare paid part).
- Rutjes AWS, et al. Vitamin and mineral supplementation for maintaining cognitive function. Cochrane Database Syst Rev. 2018. PubMed 30556597
- Labels: NIH Dietary Supplement Label Database and brand pages. Testing: NSF/ANSI 173, NSF Certified for Sport, USP Verified and Informed programs, searched by product name. Recalls: openFDA. Prices: each brand’s own store or Vitacost, checked October 13, 2026.