Inositol for PCOS
Sugar alcohol, not a true vitamin, involved in insulin signal transduction and cell membrane structure; myo-inositol is well studied for improving insulin sensitivity and ovulation in PCOS, and for reducing panic and anxiety symptoms.
Inositol for PCOS
5 of 5 results reported a benefit, from 1 published study.
1 randomised trial, 137 people · the chart counts everything measured
- 5 reported a benefit
Colour keyReported a benefitNo clear benefitUnclearPossible harmAmber is for highlights, such as where the most research is. It never means a result was good.
- Acne severityReported a benefitmeasurement not reportedMyo-inositol and D-chiro inositol significantly improved acne score compared with placebo over 6 months.1 randomised trial2015 study ↗
- Hormone levelsReported a benefitmeasurement not reportedMyo-inositol and D-chiro inositol significantly improved endocrine parameters compared with placebo over 6 months.1 randomised trial2015 study ↗
- Menstrual cycle regularityReported a benefitmeasurement not reportedMyo-inositol and D-chiro inositol significantly improved menstrual cycle regularity compared with placebo over 6 months.1 randomised trial2015 study ↗
2 laboratory markers also measured
- Insulin resistance · lab markerReported a benefitmeasurement not reportedMyo-inositol and D-chiro inositol significantly improved insulin resistance compared with placebo over 6 months.1 randomised trial2015 study ↗
- Metabolic markers · lab markerReported a benefitmeasurement not reportedMyo-inositol and D-chiro inositol significantly improved metabolic parameters compared with placebo over 6 months.1 randomised trial2015 study ↗
These are the figures the studies reported, not a prediction for any one person. Where several studies measured the same thing in the same unit, we show a simple average and say so. Every result is listed below.
See every resultThe connection
Polycystic ovary syndrome — hormonal imbalance, irregular cycles, insulin resistance, and fertility issues.
Also known as: Myo-inositol, D-Chiro-inositol
Inositol × PCOS: at a glance
Every published result for this pair, extracted and audited.
These charts count reported findings from published studies, grouped by reported benefit and study design. Study design is not a certainty grade.
Inositol / PCOS: reported findings; one study may contribute several findings.
What the evidence shows
What this means: Counts describe research quantity, not treatment effectiveness or certainty.
| Category | Findings (count) |
|---|---|
| Benefit | 5 |
Study designs behind these findings
What this means: Counts describe research quantity, not treatment effectiveness or certainty.
| Category | Findings (count) |
|---|---|
| Randomised trial | 5 |
- Studies
- 1
| Study | Outcome | Reported result | Uncertainty (as reported) | Study duration |
|---|---|---|---|---|
| Myo-inositol vs. D-chiro inositol in PCOS treatment. (PMID 25670222) | Acne score | Not reported | Not reported | 6 months |
| Myo-inositol vs. D-chiro inositol in PCOS treatment. (PMID 25670222) | Endocrine parameters | Not reported | Not reported | 6 months |
| Myo-inositol vs. D-chiro inositol in PCOS treatment. (PMID 25670222) | Insulin resistance | Not reported | Not reported | 6 months |
| Myo-inositol vs. D-chiro inositol in PCOS treatment. (PMID 25670222) | Menstrual cycle regularity | Not reported | Not reported | 6 months |
| Myo-inositol vs. D-chiro inositol in PCOS treatment. (PMID 25670222) | Metabolic parameters | Not reported | Not reported | 6 months |
Study results, as reported by the publications
Every measured outcome, one row per finding - numbers exactly as reported. Units are preserved where supplied; missing units are not inferred.
| Study and type | Reported sample and duration | Outcome measured | Reported result | What studies found |
|---|---|---|---|---|
| PMID 25670222 2015 Randomised trial | Sample (as reported): 137Duration: 6 months | Acne score | Not reported | Benefit |
| PMID 25670222 2015 Randomised trial | Sample (as reported): 137Duration: 6 months | Endocrine parameters | Not reported | Benefit |
| PMID 25670222 2015 Randomised trial | Sample (as reported): 137Duration: 6 months | Insulin resistance | Not reported | Benefit |
| PMID 25670222 2015 Randomised trial | Sample (as reported): 137Duration: 6 months | Menstrual cycle regularity | Not reported | Benefit |
| PMID 25670222 2015 Randomised trial | Sample (as reported): 137Duration: 6 months | Metabolic parameters | Not reported | Benefit |
Inositol × PCOS: the evidence base
Hand-selected PubMed studies, linked to the originals.
Ordered by strength of evidence, then result direction.
01Comparison of metformin with inositol versus metformin alone in women with polycystic ovary syndrome: a systematic review and meta-analysis of randomized controlled trialsKelly FA, et al. · Endocrine · 2025PMID 39331347 ↗02Transdiagnostic reduction in cortical choline-containing compounds in anxiety disorders: a (1)H-magnetic resonance spectroscopy meta-analysisMaddock RJ, et al. · Molecular psychiatry · 2025PMID 40913113 ↗03Inositol for Polycystic Ovary Syndrome: A Systematic Review and Meta-analysis to Inform the 2023 Update of the International Evidence-based PCOS GuidelinesFitz V, et al. · The Journal of clinical endocrinology and metabolism · 2024PMID 38163998 ↗04Nutrition and bipolar disorder: a systematic reviewGabriel FC, et al. · Nutritional neuroscience · 2023PMID 35608150 ↗05Polycystic ovaries and herbal remedies: A systematic reviewManouchehri A, et al. · JBRA assisted reproduction · 2023PMID 35916457 ↗06Inositol is an effective and safe treatment in polycystic ovary syndrome: a systematic review and meta-analysis of randomized controlled trialsGreff D, et al. · Reproductive biology and endocrinology : RB&E · 2023PMID 36703143 ↗Community experiences
Contributors volunteered; this does not establish treatment effectiveness or population incidence.
Reported changes
No publishable community breakdown is available. This does not establish that no reports exist.