This B-complex delivers a uniform 50mg or 50mcg dose across all eight B vitamins, which works well for some but leaves others far short. **Thiamine**, **Riboflavin**, and **Pantothenic Acid** all land squarely within their clinical ranges for energy metabolism and stress support. **Vitamin B6** at 50mg is solidly dosed for neurotransmitter production, though it uses pyridoxine — a form your body must convert before it can use.

**Vitamin B12** is the biggest gap. At 50mcg, you're getting just a fraction of the 250–5,000mcg range typically used in supplements — B12 absorbs poorly, which is exactly why most B-complexes dose it much higher. The form here is cyanocobalamin, which requires an extra conversion step. **Folate** is provided as synthetic folic acid at 400mcg, which covers the RDA but may not serve you well if you carry common MTHFR gene variants that impair folic acid conversion.

The uniform "50 across the board" concept is the core tradeoff. It gives you strong doses where 50mg is clinically meaningful (B1, B2, B5, B6) but leaves B12 significantly underdosed for anyone relying on this as their primary source.

BioStacks
NOW

B-50

1 Capsule · 100 servings · $0.12/serving

iHerbAmazon

Best for

EnergyGeneral Health

Ingredients (11)

Niacin

100%

Dose

50 mg

Target

25–500 mg

Form

—

Pantothenic Acid

100%

Dose

50 mg

Target

50–500 mg

Form

Premium

Vitamin B6

100%

Dose

50 mg

Target

25–100 mg

Form

Premium

Biotin

5%

Dose

50 mcg

Target

1000–5000 mcg

Form

—

Riboflavin

100%

Dose

50 mg

Target

25–100 mg

Form

Budget

Other Ingredients (4)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

HypromelloseCapsule

Plant-derived capsule material from cellulose

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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