PCOS and Trying to Conceive: Why Myo-Inositol at the 40:1 Ratio Changes Everything
The 40:1 ratio of Myo-Inositol to D-Chiro-Inositol is the most clinically studied intervention for PCOS fertility. Most Indian supplements get the ratio completely wrong.
The inositol story
Myo-Inositol and D-Chiro-Inositol are two forms of inositol — a naturally occurring compound that plays a critical role in insulin signalling and ovarian function. In women with PCOS, inositol metabolism is disrupted. The result: insulin resistance, anovulation, and impaired egg quality.
The clinical evidence is clear: the combination of Myo-Inositol and D-Chiro-Inositol at a 40:1 ratio is the most effective intervention for restoring ovarian function in women with PCOS who are trying to conceive.
What the research shows
Multiple RCTs have demonstrated that the 40:1 ratio (typically 4000mg Myo-Inositol + 100mg D-Chiro-Inositol daily) significantly improves: menstrual regularity, oocyte quality, clinical pregnancy rates, and insulin sensitivity — all without the side effects of metformin.
The Indian supplement problem
Most inositol supplements available in India either contain Myo-Inositol alone (missing the synergistic effect), use the wrong ratio, or underdose significantly. The 40:1 ratio isn't a marketing claim — it reflects the physiological ratio found in healthy ovarian follicular fluid. Getting the ratio wrong means getting the result wrong.