If there's one supplement with serious evidence behind it for PCOS, it's inositol. But walk down any supplement aisle and you'll find it dosed and formulated in ways the research doesn't support. The detail that matters most: the ratio of its two forms.
Key takeaways
- PCOS is fundamentally a condition of insulin resistance and inflammation, not just a reproductive issue.
- Myo-inositol and D-chiro-inositol act as second messengers for insulin signalling.
- The 40:1 myo:D-chiro ratio mirrors healthy human plasma and is the ratio used in positive trials.
The insulin connection
In most PCOS, high insulin comes first. It drives the ovaries to overproduce androgens, which disrupts ovulation and the menstrual cycle. Improve insulin signalling and you address the mechanism upstream of the symptoms — which is why metformin is a standard treatment, and why many women look for better-tolerated alternatives.
Why 40:1
Both inositol forms matter, but in a specific balance. Healthy plasma maintains roughly a 40:1 ratio of myo- to D-chiro-inositol. Studies (Nordio & Proietti; Unfer et al.) found this ratio supported improved insulin sensitivity, more regular cycles and ovulatory function — while high D-chiro doses alone can be counterproductive for the ovary. Many commercial products ignore this entirely.
How we use it
AETHERA CYCLE delivers myo + D-chiro-inositol at the physiological 40:1 ratio, alongside NAC for oxidative stress and berberine for glucose metabolism — the documented mechanisms, formulated correctly.
The protocolAETHERA CYCLE →References
- Nordio M, Proietti E. The combined therapy with myo-inositol and D-chiro-inositol in a 40:1 ratio. Eur Rev Med Pharmacol Sci. 2012.
- Unfer V, et al. Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials. Endocr Connect. 2017.
This article is for education and is not medical advice. Speak to your clinician if you take glucose-lowering medication. Food supplements are not intended to diagnose, treat or prevent any disease.