Ingredient guide · health

Inositol

Insulin sensitivity, PCOS & anxiety support

The clinically studied dose

2g per day Studied

Source: Examine.com — Inositol — 2–4 g/day myo-inositol for insulin sensitivity/PCOS and anxiety.

What it is

A sugar alcohol (myo-inositol) involved in insulin signaling and mood.

What the research supports

Insulin sensitivity
PCOS symptom support
Anxiety and OCD research
Fertility support

How it works

Acts as a second messenger in insulin and serotonin signaling.

Side effects & safety

Very safe, even at several grams. Mild GI upset at high doses is the only common issue.

What it should cost

	Per serving
Typical branded single-ingredient product	$0.50
Bulk powder at the clinical dose (500g, $27.97)	$0.11

Buying bulk powder instead of a branded bottle saves about 78% per serving.

Bulk price: $27.97/500g → Alt source: $9.99/250g

Related ingredients

Educational only — not medical advice. Grades and clinical doses are computed from public labels against sourced research (citations on the main site); prices last verified 2026-07-21. Expensive Powder has no sponsors; bulk links may earn an affiliate commission, which never affects a grade. Talk to a clinician before starting any supplement.