D-chiro inositol is widely used in the management of polycystic ovary syndrome (PCOS) due to its role in improving insulin sensitivity and regulating hormone levels. It helps in reducing symptoms such as irregular menstrual cycles, infertility, and hyperandrogenism. Additionally, it is employed in metabolic syndrome treatment to enhance glucose metabolism and reduce insulin resistance. In dietary supplements, it is often included to support overall metabolic health and hormonal balance. Its potential benefits in improving ovarian function and promoting ovulation make it a key component in fertility treatments.