Ascorbic acid, more commonly known as vitamin C, is a powerful antioxidant that protects the body’s cells from damage caused by harmful molecules called free radicals. It is crucial for maintaining the health of skin, teeth, bones, cartilage, and blood vessels. Vitamin C also supports brain function and may be beneficial for individuals with cognitive impairments such as Alzheimer's disease and dementia. A deficiency in vitamin C can lead to increased risk of cardiovascular illness, weakened immune function, premature aging, higher stress response, and low energy.

Ascorbic acid is naturally found in many foods, including citrus fruits, kiwi, broccoli, tomatoes, leafy vegetables, potatoes, brussels sprouts, raw bell peppers, and strawberries. Most people can obtain sufficient amounts of vitamin C through their diet, but for those who cannot absorb enough through food or supplements, injections may be recommended. In addition to its role in immune and skin health, vitamin C helps protect against the damaging effects of environmental pollutants like cigarette smoke and is linked to reduced risks of heart disease, cancer, and arthritis. It can also be helpful for managing colds, macular degeneration, inflammation, skin aging, and recovery after a stroke.