If you need comprehensive energy and metabolic support, this B complex hits the clinical range across the board. **Thiamine** at 60mg, **Riboflavin** at 75mg, **Vitamin B6** at 50mg, and **Pantothenic Acid** at 100mg all land squarely within studied supplemental doses. **Vitamin B12** at 1,000mcg as methylcobalamin gives you the body-ready form at a well-researched dose.

**Folate** is delivered as Quatrefolic (methylfolate) at 400mcg DFE — the active form your body can use directly, which matters especially if you carry an MTHFR gene variant that impairs folic acid conversion. B6 also uses a blend that includes P5P, the active form. These form choices mean your body spends less energy converting inactive vitamins.

The only real gap is **Biotin** at 600mcg, which falls below the 1,000mcg minimum in supplement research — though biotin deficiency is rare and this dose still covers the RDA 20 times over. What this means for you: for most people, that's a non-issue.

BioStacks
Doctor's Best

Fully Active B Complex with Quatrefolic

1 Capsule · 60 servings

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What it does

A combination of 9 label ingredients.

Vitamin B9

quatrefolicPremium

Supports DNA production, normal cell division and red blood cell formation.

Vitamin C

ascorbic acidBudget

Supports normal collagen production and immune function, and helps the body absorb iron from plant foods.

EnergyGeneral Health
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Ingredients (9)

Other ingredients

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

Lab testing

How to take it

With food

On the label

Suggested Adult Use: Take 1 capsule daily with food, or as recommended by a nutritionally informed physician.

Price check

$17.99

$10$20$50

Cheaper than 70% of 239 energy supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.

Not medical advice. Consult your healthcare professional.

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