Vitamin C is an antioxidant that is necessary for growth and regenerative processes in tissues (cell rejuvenation), adrenal function, strengthening the body's defenses. Vitamin C promotes production of anti-stress hormones and interferon (immunity). Vitamin C is a strong antioxidant, strengthens the immune system, protects against free radicals, is involved in the synthesis of collagen, steroid hormones and catecholamines, strengthens blood vessels.