Because the potato is most often associated with baking, boiling or roasting for side dishes, juicing one may not have occurred to you. But, potato juice is nutrient-rich. While the taste of potato juice alone is unappetizing -- too vegetal and starchy with little natural sweetness -- its mild flavor means it can be mixed with other fruit and vegetable juices without affecting the taste. It takes 2 cups of diced, peel-on, raw potato to produce a 1/2-cup serving of fresh potato juice.
An electrolyte and essential mineral, potassium helps maintain the electrical activity in your heart. It also helps with the production of protein and muscle and regulates the acid-base balance in your body's cells. Potassium also helps with maintaining healthy body growth and aids breakdown and use of carbohydrates. A 1/2-cup serving of potato juice has 1,263 milligrams of potassium, which is almost 27 percent of the daily recommended dietary intake for all adults.
Immune-Boosting Vitamin C
Vitamin C helps produce collagen, which is used to make tendons, ligaments, blood vessels and skin. Consequently, it helps with the maintenance of cartilage. Vitamin C is also important for the production of scar tissue, promoting wound healing. As a natural antioxidant, vitamin C helps your body defend itself from free radicals and environmental toxins such as smog and radiation, which can lead to premature aging and increase the risk of heart disease and cancer. A 1/2-cup serving of potato juice contains just over 59 milligrams of vitamin C. This is more than 50 percent of the dietary reference intake for all adults, with the exception of breastfeeding women, for whom it provides only 49 percent of the DRI.
Thiamine for Energy
A member of the B vitamin group, thiamine -- vitamin B-1 -- helps with maintaining healthy skin, eyes and teeth. It also provides support to your nervous system and helps your body break down carbohydrates into usable energy. A 1/2-cup serving of potato juice contains 0.24 milligrams of thiamine. This provides 20 percent of the recommended dietary allowance for adult men, almost 22 percent for adult women and 17 percent for women who are pregnant or breastfeeding.
Also a member of the B vitamin group, niacin, also known as vitamin B-3, provides support to your nervous system, aids in the breakdown and use of carbohydrates and maintains healthy skin, teeth and eyes. Niacin is also known for helping improve circulation and for helping make a range of sex and stress hormones in your body. With just over 3 milligrams of niacin per 1/2-cup serving, potato juice provides almost 20 percent of the recommended dietary allowance for adult men, 22.5 percent for adult women, 17.6 percent for pregnant women and 18.6 percent for breastfeeding women.