Copper citrate is widely used as a dietary supplement and mineral fortifier in food and pharmaceutical products due to its high bioavailability. It serves as a source of copper in nutritional formulations, supporting enzyme function, connective tissue formation, and iron metabolism. In agriculture, copper citrate is applied as a micronutrient in fertilizers to correct copper deficiency in soils, promoting healthy plant growth and improving crop yields. It is especially effective in fruit trees, vegetables, and cereals. It is also utilized in cosmetics and skincare products for its role in promoting collagen synthesis and antioxidant activity, contributing to skin health and anti-aging formulations. In industrial applications, copper citrate acts as a catalyst or precursor in chemical synthesis and is used in some wood preservatives and antimicrobial coatings due to copper’s inherent biocidal properties.