The Forgotten Power of Potato Juice: Why It Deserves a Second Look

Most people only ever meet the potato boiled, mashed, or fried — and never realize that raw, it's a different vegetable entirely. Cooking is exactly what strips a potato of the nutrients that make the raw juice interesting in the first place.

A woman in her sixties, who has been juicing raw potatoes every morning for over a decade after a friend recommended it for stomach discomfort, describes it simply: "I don't know if it's the potato or the habit of starting my day with something fresh, but my digestion has never been calmer." Stories like hers are common in home-remedy circles across Central Europe — though, as with any anecdote, they aren't a substitute for clinical evidence.

What's Actually in Raw Potato Juice

Raw potato juice is rich in vitamin C, potassium, iron, copper, several B vitamins, and antioxidant compounds like phenolic acids and carotenoids (ResearchGate, Potato juice – a raw material with unique potential for the food industry and medicine). Because heat destroys much of a potato's vitamin C, raw preparation preserves nutrients that cooking simply cannot: half a cup of raw potato provides noticeably more vitamin C than the same amount boiled (Greatist, Potato Juice: Nutrient-Packed Drink for Better Health).

That vitamin C matters beyond immunity — it's water-soluble and plays a role in cardiovascular and eye health, and it helps the body absorb iron more efficiently (Greatist). Potato juice is also one of the richer plant sources of potassium, along with meaningful amounts of copper and iron — two minerals often overlooked in anemia prevention (ResearchGate).

Interestingly, a recent randomized crossover trial found that vitamin C consumed through juice was absorbed into the bloodstream even more efficiently than the same dose taken as a supplement or eaten as whole raw produce (Nutrients, 2025, Comparative Bioavailability of Vitamin C After Short-Term Consumption of Raw Fruits and Vegetables and Their Juices) — though that study looked at mixed fruit and vegetable juices generally, not potato juice specifically.

What Traditional Use Claims — and Where the Evidence Actually Stands

In European folk medicine, a small glass of raw potato juice taken before meals has long been used to soothe an upset stomach. Potato juice is naturally alkaline, and some research suggests its glycoalkaloid compounds may help protect the stomach lining (Sunwarrior, Benefits of Raw Potato Juice). It's also been used for general "detox" support, mild joint discomfort, and as a home remedy for tired-looking skin. These are long-standing traditional uses rather than established medical treatments, and none of them should replace advice from a doctor — especially for anyone managing gastritis, ulcers, kidney issues, or blood sugar concerns, where raw potato products can interact with medication or underlying conditions.

Is Raw Potato Safe to Eat?

The idea that raw potatoes are "poisonous" is an oversimplification, but it comes from a real concern: unripe, green, or sprouting potatoes can contain solanine, a naturally occurring toxin concentrated in the skin, sprouts, and any green-tinged flesh. The fix is simple — choose firm, unblemished, organically grown potatoes, cut away any green patches and sprouts, and the risk is effectively eliminated (Sunwarrior). Most of a potato's nutrients actually sit just under the skin, which is one more reason to juice unpeeled, organic potatoes rather than peeled conventional ones (Organic Facts, 13 Amazing Potato Juice Benefits for Skin and Health).

One caution worth noting: raw potatoes, like other raw vegetables, contain lectins — proteins that resist digestion and, in large amounts, may irritate the gut or interfere with nutrient absorption. Cooking neutralizes them; juicing does not (Greatist). Moderation is the practical takeaway rather than daily excess.

How to Make Potato Juice at Home

Wash the potatoes thoroughly and cut away any sprouts or green patches. Grate the potato finely, wrap it in a clean cloth, and press out the juice by hand — or run it through a juicer. Drink it fresh; the nutrient content drops quickly once exposed to air.

For a milder taste, blend it with a carrot and an apple, and a splash of lemon juice or honey if you like. Many people find the flavor easier to handle diluted this way than on its own.

A Simple Potato Face Mask

Grated raw potato is a popular, gentle home remedy for tired or puffy-looking skin — some people apply it as a short mask to hydrate and refresh the skin, or use thin potato slices under the eyes to reduce the appearance of puffiness. Results are cosmetic and temporary rather than a treatment for cellulite or wrinkles, and claims of overnight transformation should be taken with a large grain of salt; skin care benefits from realistic expectations as much as any other kind.