Vitamin B3 derivatives, primarily niacin and niacinamide, are forms of vitamin B3 that play essential roles in the body. Niacin is known for its ability to help convert food into energy and support healthy cholesterol levels. It is also important for maintaining skin health and proper nervous system function. Niacinamide, on the other hand, is a popular ingredient in skincare products due to its anti-inflammatory properties and ability to improve skin texture. Both derivatives are vital for various metabolic processes and can be found in foods like meat, fish, and whole grains, as well as in dietary supplements.