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Myo-Inositol

Also known as Inositol, IP-6 precursor

What it is: Cyclitol related to B-vitamins
What it does: Acts as a second messenger in insulin and neurotransmitter signaling
Status: Widely used supplement
Evidence: Moderate. Moderate human data.
Uses: Insulin sensitivity; PCOS support; mood and sleep protocols

Caution. Generally well tolerated; may cause mild GI upset at higher doses.

Summary

Myo-inositol is a cyclitol that functions as a second messenger in insulin and neurotransmitter pathways. It is commonly used to support insulin sensitivity, ovarian function in PCOS, and aspects of mood and sleep. It is often combined with D-chiro-inositol in specific ratios for metabolic and reproductive indications.

Checked Jul 19, 2026.

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This entry summarises published information in plain language. It is not medical advice, a dosing recommendation or a substitute for a qualified healthcare professional. Many peptides are not approved for human use, and legal status varies by country. Check anything you rely on against primary sources.