BioStacks
Natural Factors

Biotin 5000 mcg

1 Capsule · 60 servings · $0.14/serving

iHerbAmazon

Best for

Hair

Ingredients (2)

Biotin

100%

Dose

5000 mcg

Target

1000–5000 mcg

Form

—

Calcium

125 mg

Trace amount — not scored

Other Ingredients (3)

Magnesium StearateLubricant

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

Microcrystalline CelluloseBinder

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

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

How to Take It

Take it anytime

Timing doesn't matter — but stop taking it 2–3 days before any blood test. Biotin skews thyroid and troponin lab results.

With or without food

On the label

1 capsule per day or as directed by a health professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$8.37

$10$20$50

Cheaper than 92% of 638 calcium 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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