Inositol is widely used in the food and pharmaceutical industries due to its role in cellular signaling and metabolic processes. It is commonly added to energy drinks, infant formulas, and dietary supplements for its potential benefits in supporting mental health, particularly in managing conditions like anxiety, depression, and obsessive-compulsive disorder. In clinical settings, specific forms such as myo-inositol are studied for their effectiveness in improving insulin sensitivity, making them useful in managing polycystic ovary syndrome (PCOS) and gestational diabetes. It also supports liver function by aiding in fat metabolism and is used in skincare products for its ability to improve hydration and barrier function. Additionally, inositol serves as a precursor in the synthesis of secondary messengers involved in hormone action and nerve signal transmission.