If you're supplementing B6 for mood, energy, or hormonal balance, this gives you the form your body actually uses. **Vitamin B6** as pyridoxal-5'-phosphate (P5P) delivers 33 mg per capsule, landing squarely within the 25–100 mg clinical range — and because it's already in active form, your liver doesn't have to convert it from standard pyridoxine.

You're also getting 25 mg of **Magnesium** from bisglycinate (TRAACS chelate), a premium form with good absorption. However, 25 mg is a small fraction of the 100–400 mg clinical range — it's more of a cofactor complement than a meaningful magnesium dose on its own.

If you're supplementing B6 specifically for mood support, energy metabolism, or hormonal balance, the active P5P form at this dose is well-positioned. Just don't count on this to meaningfully move the needle on your magnesium intake.

BioStacks
NOW

P-5-P 50 mg

1 Capsule · 90 servings · $0.15/serving

iHerbAmazon

Best for

Energy

Ingredients (2)

Vitamin B6

100%

Dose

33 mg

Target

1.3–25 mg

Form

Premium

Magnesium

25 mg

Trace amount — not scored

Other Ingredients (5)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

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

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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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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