Mood Support

Inositol

Also known as: 40:1 Inositol Blend, D-chiro-inositol, Inositol (Myo-Inositol), Inositol Blend

Evidence

B vitamin-like compound particularly effective for PCOS, insulin sensitivity, and egg quality.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

Anxiety
OCD support
PCOS
Sleep
Ovulation
Insulin sensitivity
Egg quality
Androgen reduction

How it works

Second messenger in serotonin system
Insulin signaling support

Dosage

Typical range: 2-18g daily (varies by condition)
Timing: Divided doses
With food: Either
Duration: 4-6 weeks for anxiety
Special populations: Anxiety, OCD, PCOS

Forms

Powder
Capsule
Myo-inositol powder
40:1 myo:D-chiro blend
Capsules
40:1 blend

Safety

Common side effects

GI upset high doses
Nausea

Contraindications

Bipolar (may trigger mania)

Products containing Inositol

Top-scoring supplements in our catalog that list Inositol on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Complement

ForHer Hormone Balance and Longevity Multivitamin for Women

Thorne

Ovarian Care

See all products →

Evidence notes

Strong evidence for PCOS and ovulation improvement

Grade A: Multiple well-designed human trials support the main claims.

Related in Mood Support

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.