Top Picks
These are the products we currently recommend, chosen from what we have reviewed across the site. Each pick lists what it is good for and who it suits, so you can match one to your situation rather than defaulting to the cheapest listing.
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Plain myo-inositol at 500 mg per vegetarian capsule, 200 to a bottle, from a long-established brand. A sensible default if you want a fixed dose without weighing powder: it is vegan and non-GMO, and made without gluten, soy, dairy, egg, corn or nuts.
A combination powder rather than plain inositol: each of the 45 servings carries 4 g myo-inositol plus 100 mg CoQ10, 400 mcg methylfolate (L-5-MTHF) and vitamin D3. Worth considering if you would otherwise buy those separately, and worth skipping if you want to set each dose independently. Sugar free, gluten free, and tested for heavy metals and common allergens.
A small 4 oz jar of unflavored inositol powder, which makes it a low-commitment way to try the powder form before committing to a one-pound tub. Gluten free, free from synthetic GMOs, and it blends into water, juice or smoothies.
An 8 oz unflavored powder that pairs myo-inositol with D-chiro-inositol in the 40:1 ratio rather than using myo alone. Produced in a Texas Department of Health licensed, GMP-certified and ISO-certified facility, and it is gluten free and paleo friendly.
The 40:1 myo and D-chiro pairing in capsule form instead of powder, which is the easier route if you would rather not mix a drink or need to take a dose away from home. Non-GMO, vegan and gluten free, made in the USA in a GMP-certified facility and lab tested for purity.
A 40:1 myo and D-chiro inositol powder at 60 servings, roughly a two month supply, marketed to women following their cycle. No fillers, artificial ingredients or aftertaste, and it dissolves into coffee, cold water or a smoothie.