Supplement Support
Supplements for PCOS
Supplement support for polycystic ovary syndrome — the two ingredients with real RCT evidence vs. everything else.
Polycystic ovary syndrome affects ~10% of women of reproductive age and drives insulin resistance, androgen excess, and ovulatory dysfunction. Lifestyle intervention (weight management when appropriate, regular exercise) is first-line and has larger effect sizes than any supplement. For supplements, two compounds stand out with multiple RCTs specifically in PCOS populations. Marketing around this condition is heavy — be skeptical of 'PCOS blends' without per-ingredient dosing.
Evidence-rated supplements
Multiple RCTs show improved insulin sensitivity, ovulation frequency, and androgen markers. Approaches metformin efficacy with better tolerability.
Dose: 2,000 mg myo-inositol + 50 mg D-chiro-inositol, 2×/day (the 40:1 ratio matches plasma levels)
Full Inositol profile →AMPK activator with head-to-head evidence against metformin for PCOS insulin resistance. Improves androgen profile alongside glucose.
Dose: 500 mg 2–3×/day with meals
Full Berberine profile →Vitamin D deficiency is common in PCOS and correcting it modestly improves insulin and hormonal markers.
Dose: 1,000–2,000 IU/day; correct deficiency to 40+ ng/mL
Full Vitamin D profile →Modest improvements in triglycerides, inflammation markers, and androgen levels in PCOS-specific trials.
Dose: 2 g combined EPA+DHA/day
Full Omega-3 Fatty Acids profile →Lifestyle context
Weight management when appropriate (5–10% loss improves ovulation and insulin sensitivity substantially), resistance training (not just cardio — builds insulin-sensitive muscle), and reduced-sugar eating patterns have the biggest effect sizes of any intervention. Sleep quality is underrated.
When to see a clinician
PCOS benefits from gynecologist / endocrinologist management, especially around fertility planning. Self-supplementation is a complement to clinical care, not a replacement. If periods are absent for more than 3 months, uterine lining protection becomes a concern — discuss with clinician.
Related reading
Next steps
Educational only. This page is not medical advice. Discuss any supplement plan with your clinician — especially if you take prescription medication or have a chronic condition.