NAT-C Ester 30s Capsules contain Ester-C, a patented form of vitamin C known for its enhanced absorption and gentler effect on the stomach. These capsules are designed to support immune function, skin health, and overall well-being. Ester-C is a highly bioavailable form of vitamin C, providing antioxidant benefits and helping with collagen formation. It is commonly used to strengthen the immune system and maintain healthy skin and connective tissue.