howtosupplement
Women/Hormonal/Mood

Inositol

Sugar-like compound that improves insulin sensitivity and ovulation in PCOS, and may reduce panic attacks. Best for women with hormonal imbalances.

Inositol

Inositol

68
score
B
evidence
Safe
risk
Quick Take

Worth considering if you have PCOS, insulin resistance, or panic disorder — otherwise limited benefit for general health.

Inositol is a sugar alcohol found in fruits, beans, grains, and nuts, and is synthesized by the body. It functions as a precursor to second messengers that regulate insulin and FSH signaling. Meta-analyses show myo-inositol improves ovulation, lowers testosterone, and enhances insulin sensitivity in PCOS. It also reduces gestational diabetes risk and panic attack frequency in clinical trials. Most beneficial for women with PCOS, pregnant individuals at risk for gestational diabetes, and those with panic disorder.

Proven Benefits

01
Improves PCOS and ovulation
02
Improves insulin sensitivity
03
Reduces gestational diabetes risk
04
Reduces panic attack frequency
05
May support fertility outcomes
06
May improve thyroid in Hashimoto's
07
May reduce OCD symptoms

Protocol

Amount
2-4 g
Frequency
Once or twice daily
When
Split into two doses with meals for PCOS or metabolic goals; any time for mood support.

Onset Time

2-4 weeks for PCOS/metabolic effects; 4-8 weeks for mood benefits.

Who Should Consider

Women with PCOS
People with panic disorder
Pregnant women at GDM risk
Those with insulin resistance
Women seeking fertility support

Food Sources

  • Cantaloupe (~350 mg per 100 g)
  • Oranges (~300 mg per 100 g)
  • Beans and lentils (~150-200 mg per 100 g)
  • Whole grains (~100-150 mg per 100 g)
  • Nuts (~60-100 mg per 100 g)

How It Works

Inositol is incorporated into cell membranes as phosphatidylinositol, which is cleaved into IP3 and DAG. These second messengers regulate intracellular calcium release and insulin signal transduction. In PCOS, myo-inositol restores insulin sensitivity and normalizes ovarian FSH signaling, improving follicular maturation and reducing androgen synthesis.

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