Vitamin C (ascorbic acid) injections are a medical-grade form of vitamin C administered intramuscularly (IM) or intravenously (IV). Unlike oral supplements, injections bypass the digestive system, ensuring higher absorption levels. These injections are commonly used to boost immune function, enhance skin radiance, reduce fatigue, and support recovery in patients with deficiencies or high oxidative stress. They are often used in wellness clinics, aesthetic treatments, and integrative cancer therapies.