BioStacks
GNC

Inositol 500 mg

1 Tablet · 100 servings · $0.20/serving

iHerbAmazon

Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.

Best for

Hormones

Ingredients (1)

Inositol

25%

Dose

500 mg

Target

2000–4000 mg

Form

—

Other Ingredients (6)

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.

Magnesium StearateLubricant

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

Hydroxypropyl CelluloseBinder

An inert modified-cellulose polymer used as a binder, film-former, and disintegrant.

Microcrystalline CelluloseBinder

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

PolyvinylpyrrolidoneBinder

A synthetic polymer used as a tablet binder and film former

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

How to Take It

Take it anytime

Trials dose 2 g twice daily — split it morning and evening rather than taking it all at once.

With or without food

On the label

As a dietary supplement, take one or two tablets daily.

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

Price Check

$19.99

$10$20$50

Cheaper than 65% of 66 inositol 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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