Vitamin C
Water-soluble vitamin that prevents deficiency, modestly shortens colds, and best helps adults with low produce intake.

Vitamin C
Water-soluble vitamin that prevents deficiency, modestly shortens colds, and best helps adults with low produce intake.
Worth it if your diet is light on fruit and vegetables or you want a small reduction in cold duration.
Vitamin C is a water-soluble vitamin found in citrus, kiwi, berries, peppers, broccoli, and potatoes. It acts as an electron donor and enzyme cofactor for collagen, carnitine, and catecholamine synthesis, while helping regenerate other antioxidants. Best-supported uses are correcting deficiency and modestly shortening common colds; smaller benefits may include slight improvements in blood pressure and vascular function. It helps most when fruit and vegetable intake is low or smoking increases needs.
Proven Benefits
Protocol
Onset Time
Who Should Consider
Food Sources
- Red bell pepper (~95 mg per 1/2 cup raw)
- Kiwi (~65 mg each)
- Orange (~70 mg each)
- Strawberries (~85 mg per cup)
- Broccoli (~50 mg per 1/2 cup cooked)
- Potato (~20 mg per medium potato)
How It Works
Vitamin C donates electrons to neutralize reactive oxygen species and helps regenerate oxidized vitamin E. It is also a required cofactor for enzymes that make collagen, carnitine, and norepinephrine, and it supports leukocyte migration and barrier integrity.
