Essential Immune Support! Also known as Ascorbic Acid, Vitamin C represents one of the key vitamins involved in many bodily functions. Vitamin C is necessary for iron absorption into the bloodstream. It’s also important in wound healing and when paired with Zinc, stimulates the immune system. Stacking Vitamin C with Insane Amino and Glutamine would be the ideal recovery and immune-boosting matrix for anyone that lives an active lifestyle. Note: Manufacturers continually change product specifications. While we try our best to keep product descriptions up to date, they do not necessarily reflect the latest information available from the manufacturer. We are not responsible for incorrect or outdated product descriptions and/or images.