What is Inositol? Inositol is a type of sugar alcohol found naturally in many foods such as fruits, grains, and beans. It is sometimes referred to as vitamin B8, although not officially recognized as a vitamin. Inositol is a component of cell membranes and is involved in various physiological processes such as insulin signalling, neurotransmitter action, and lipid metabolism. Scientific research papers about Inositol indicate the potential therapeutic use for various conditions such as anxiety, depression, polycystic ovary syndrome (PCOS), and insulin resistance. Inositol is the main ingredient in dietary supplements in the form of Myo-inositol or D-chiro-inositol, two forms of Inositol that have different biological effects. What is the difference between Myo-inositol and D-chrio inositol? Myo-inositol and D-chiro-inositol are two forms of inositol, a type of sugar alcohol found naturally in many foods. Both with similar chemical structures but differ in biological effects. Myo-inositol (Ingredient Depot) is the most abundant form of inositol found in nature. It involves various physiological processes such as insulin signalling, membrane lipid synthesis, and neurotransmitter action. Myo-inositol is documented to improve insulin sensitivity, ovarian function, and fertility in women with polycystic ovary syndrome (PCOS). Myo-inositol is also a factor for other conditions such as anxiety, depression, and obsessive-compulsive disorder (OCD). D-chiro-inositol is a less abundant form of inositol involved in insulin signalling and glucose metabolism. Particularly effective in improving insulin resistance in women with PCOS. Studies have shown that supplementing with D-chiro-inositol can improve insulin sensitivity, glucose metabolism, and menstrual regularity in women with PCOS. In summary, myo-inositol and D-chiro-inositol are important forms of inositol with different biological effects. Myo-inositol is involved in various physiological processes, while D-chiro-inositol is particularly effective in improving insulin resistance and glucose metabolism in women with PCOS. What is the grade and manufacturer's country for this product? Our Inositol (myo-inositol) is manufactured in China and meets the United States Pharmacopeia (USP) standards for purity, potency, and quality.