Caffeic acid is a naturally occurring compound found in various plants, particularly in coffee, fruits, and vegetables. It belongs to a group of compounds known as phenolic acids, which are known for their antioxidant properties. Caffeic acid is often studied for its potential health benefits, including anti-inflammatory and antimicrobial effects. In addition to its presence in food, caffeic acid is also used in some dietary supplements and herbal products. It plays a role in the plant's defense mechanisms against pathogens and environmental stress. Research continues to explore its various applications in health and nutrition.