5 Best Vitamin B Complex Supplements for 2025, According to Our Dietitians

If you’re short on B vitamins, brands like Nordic Naturals, Thorne, and Klean Athlete provide reliable supplements. Read on for additional recommendations from our dietitians and to find out whether a B-complex supplement might be suitable for you.

Quick look at the best vitamin B complex supplements

There are eight B vitamins that support metabolism, nerve health, and energy generation, among other bodily functions. Since these vitamins are plentiful in foods such as animal products, legumes, leafy greens, and fortified items, many people obtain sufficient B vitamins from their diet.

However, if you follow a vegetarian or vegan diet, have elevated nutrient demands, or have a medical issue that impairs nutrient absorption, a B-complex supplement could be helpful. Below are the products our dietitians most often recommend.

Our dietitians

Rachael Ajmera, MS, RD, contributes regularly to HealthEH and is a registered dietitian with a focus on plant-based nutrition. Ellen Landes, MS, RDN, CPT, is a registered dietitian and certified personal trainer who specializes in nutrition for exercise performance.

A note on price

Vitamin B complex supplements typically cost between $0.35 and $1.33 per serving, or about $13 to $45 per bottle. Liquid versions are usually pricier. Serving sizes differ by product.

• $ = under $0.50 per serving
• $$ = $0.50 to $1 per serving
• $$$ = over $1 per serving

HealthEH’s picks of the best vitamin B complex supplements

Best vitamin B supplement overall

Nordic Naturals Vitamin B Complex

• Form:capsule
• Number of servings:45 per container
• Dose:1 capsule per day
• Certifications:non-GMO verified, third-party tested for purity
• Price:$$

HealthEH’s review

Although Nordic Naturals is often recognized for its omega-3 products — which rank highly for fish oil — the brand also produces a top-tier vitamin B complex.

It earns our recommendation as the best overall vitamin B complex because of its strict testing protocols and a well-rounded formulation aimed at improving absorption.

Nordic Naturals Vitamin B Complex supplies all eight B vitamins in bioavailable forms, such as methylcobalamin (the active form  of B12) and 5-methyltetrahydrofolate (5-MTHF), the biologically active  form of folate.

All Nordic Naturals formulas are non-GMO, gluten-free, dairy-free, and lack artificial colors, flavors, and preservatives.

The company also provides a certificate of analysis (COA) so customers can confirm that products have been tested and meet stated standards.

Pros & cons

• contains all eight B vitamins
• third-party tested
• COA is easy to find online
• vegan-friendly, and free of gluten and dairy

• some nutrients are present in very high amounts

Product details

• Active ingredient(s) :thiamin 37 mg (3,083% DV), riboflavin 26.6 mg (2,046% DV), niacin 37 mg NE (231% DV), vitamin B6 45 mg (2,647% DV), folate 333 mcg DFE (83% DV), vitamin B12 250 mcg (10,417% DV), biotin 300 mcg (1,000% DV), pantothenic acid 60 mg (1,200% DV)
• Returns :returns within 30 days
• Shipping :free shipping over $30

Best vitamin B supplement for athletes

Klean Athlete B-Complex

• Form:capsule
• Number of servings:60 per container
• Dose:1 capsule per day
• Certifications:NSF Certified for Sport, third-party tested for purity and potency
• Price:$

HealthEH’s review

Several B vitamins are utilized  by the body during exercise for energy, tissue repair, and other processes. That makes meeting B vitamin needs important for athletes and physically active people through food or supplements.

Klean Athlete’s B complex is an excellent option for athletes  because it carries the NSF Certified for Sport seal — a validation that the product is free from over 280 substances prohibited by major sports organizations.

It includes bioavailable forms of all eight B vitamins, such as 5-MTHF and methylcobalamin, and features Benfopure benfotiamine, a thiamine-like compound thought  to have anti-inflammatory benefits.

Klean Athlete produces supplements in a CGMP-inspected  facility and employs both internal and third-party testing to verify quality.

Pros & cons

• contains all eight B vitamins
• also includes choline and inositol
• third-party tested
• NSF Certified for Sport
• vegan, dairy- and gluten-free

• some nutrients are supplied in very large doses
• some users report a chalky aftertaste

Product details

• Active ingredient(s) :thiamine 25 mg (2,083% DV), riboflavin 15 mg (1,154% DV), niacin 50 mg (313% DV), vitamin B6 50 mg (2,914% DV), folate 1,333 mcg DFE (333% DV), vitamin B12 800 mcg (33,333% DV), biotin 400 mcg (1,333% DV), pantothenic acid 100 mg (2,000% DV), choline 40 mg (7% DV), inositol 25 mg, Benfopure benfotiamine 3 mg
• Returns :returns within 14 days
• Shipping :free shipping on orders over $40

Most affordable vitamin B supplement

Pure Encapsulations B-Complex Plus

• Form:capsule
• Number of servings:120 per container
• Dose:1 capsule per day
• Certifications:certified gluten-free, non-GMO verified, vegan
• Price:$

HealthEH’s review

Pure Encapsulations includes all eight B vitamins — with 5-MTHF and methylcobalamin — and typically costs less per serving than many comparable formulas.

The brand surpasses standards set by the United States Pharmacopeia (USP), a nonprofit that defines strict quality, purity, and identity criteria for supplements.

It’s also tested by independent labs and certified gluten-free by the Gluten-Free Certification Organization, making it a sensible option for those with gluten-related conditions.

Pros & cons

• contains all eight B vitamins
• budget-friendly
• certified gluten-free
• third-party tested ingredients
• suitable for vegans

• may be harder to locate in brick-and-mortar stores
• B12 dose is relatively high

Product details

• Active ingredient(s) :thiamin 100 mg (8,333% DV), riboflavin 12.7 mg (977% DV), niacin 108 mg (675% DV), vitamin B6 16.7 mg (982% DV), folate 667 mcg DFE (167% DV), vitamin B12 400 mcg (16,667% DV), biotin 400 mcg (1,333% DV), pantothenic acid 100 mg (2,000% DV)
• Returns :eligible for refund or replacement if damaged or defective
• Shipping :free shipping for Prime members

Best liquid B12 supplement

Pure Encapsulations B-Complex Liquid

• Form:liquid
• Number of servings:28 per container
• Dose:1 tsp (5 mL)
• Certifications:certified gluten-free
• Price:$$$

HealthEH’s review

Pure Encapsulations B-Complex Liquid is a solid choice for people who have trouble swallowing pills. It provides six B vitamins: vitamin B12, thiamine, riboflavin, niacin, vitamin B6, and pantothenic acid.

However, this liquid formula does not include biotin or folate. If you require extra folate, for example during pregnancy or due to a genetic variation affecting folate metabolism, you’ll need a separate folate supplement.

The product is sweetened with juice concentrates and stevia.

Pros & cons

• easy-to-use liquid format
• third-party tested ingredients
• certified gluten-free
• vegetarian-friendly
• no added sugar

• omits folate and biotin
• costly
• not vegan-friendly

Product details

• Active ingredient(s) :thiamin 3.5 mg (292% DV), riboflavin 3 mg (231% DV), niacin 10 mg (63% DV), vitamin B6 4 mg (235% DV), vitamin B12 500 mcg (20,833% DV), pantothenic acid 10 mg (200% DV)
• Returns :eligible for refund or replacement if damaged or defective
• Shipping :free shipping for Prime members

Best vegan vitamin B supplement

Thorne B-Complex #12

• Form:capsule
• Number of servings:60 per container
• Dose:1 capsule per day
• Certifications:third-party tested for purity and potency
• Price:$

HealthEH’s review

People following a vegan diet face a higher risk  of deficiencies in certain B vitamins, notably B12, since these nutrients are concentrated in animal-derived foods.

Thorne B-Complex #12 is formulated for vegans, with no animal-derived ingredients, and delivers all eight B vitamins in active, absorbable forms.

Thorne follows the FDA’s CGMP  standards and holds an A rating from the Australian Therapeutic Goods Administration. The brand performs multiple rounds of internal testing to verify product quality and purity.

Pros & cons

• provides all eight B vitamins
• includes choline
• third-party tested
• vegan and gluten-free

• B12 is supplied in much higher amounts than some other B vitamins
• may be less available in local retailers

Product details

• Active ingredient(s) :thiamin 40 mg (3,333% DV), riboflavin 28.6 mg (2,200% DV), niacin 80 mg (500% DV), vitamin b6 23.4 mg (1,376% DV), folate 667 mcg DFE (167% DV), vitamin B12 600 mcg (25,000% DV), biotin 80 mcg (267% DV), pantothenic acid 45 mg (900% DV), choline 14 mg (3% DV)
• Returns :no returns
• Shipping :free shipping for Prime members

Vitamin B complex supplements compared

Our Medical Standards and Insights group has thoroughly reviewed over 11,000 products and services. We fact-check health assertions, assess ingredients, and evaluate each brand’s reputation before featuring products on HealthEH.

To select the brands featured here, we reviewed all vitamin brands that met our vetting criteria and personally tested several to refine our recommendations.

How to pick a vitamin B complex supplement

• Your needs: Do you want a supplement that includes all eight B vitamins, or do you prefer a product that focuses on specific B vitamins like B12 and folate?
• Type of folate: Many B complexes use folic acid, the synthetic folate found in fortified foods. However, evidence  indicates folic acid is not absorbed as well as the active folate form, 5-MTHF. When possible, choose products with 5-MTHF.
• Dosage: B vitamins are water-soluble and excess amounts are typically excreted in urine — yet toxicity can occur with very high doses. Discuss appropriate amounts with a healthcare provider and follow label directions.
• Cost: Price varies, but affordability doesn’t necessarily mean lower quality. There are many well-formulated, inexpensive B complex supplements available.

Vitamin B Complex vs. Vitamin B12

In short, a vitamin B complex contains multiple essential B vitamins in one pill, tablet, or gummy, whereas a vitamin B12 supplement contains only B12.

For recommendations on B12-only supplements, see our dietitian-curated list of the best B12 vitamins in 2024.

Useful supplement shopping guides

If you want more help navigating supplement purchases and understanding product labels, check out these articles:

• How to choose high quality vitamins and supplements
• How to read supplement labels like a pro

The bottom line

Which B vitamin supplement is best for you depends on your diet and individual health needs. Work with a healthcare provider to determine whether a supplement would help and whether you need a full B complex or a single B vitamin.