Does Raw Potato Juice Cure Strep Throat? A Fact-Check

Q: Is There Any Grain of Truth?

To be fair, potato juice is not entirely without study [3]. Some lab and animal research suggests it may help reduce certain gastrointestinal distress, such as soothing gut inflammation, though experts agree more research is needed and these findings are about digestion, not infections [3]. That lim

2026-07-20◦933 words

Free top view raw potato — Photo: Unknown (CC0 1.0) via Openverse

A viral trend claims that drinking raw potato juice can "cure" strep throat and other infections, with some videos suggesting a cup twice a day clears symptoms in 2 to 3 days ^³. Doctors are firm that this is false and potentially dangerous: there is no evidence potato juice treats any infection, and using it instead of antibiotics for strep can lead to serious complications ^¹. Here is a fair, evidence-based look at this one.

What the Trend Claims

The trend took off with influencers juicing raw potatoes and drinking the liquid to treat strep throat, some claiming it works "on contact" or eliminates symptoms within hours ^¹. One popular video advised drinking roughly 6 to 8 ounces twice daily to clear strep in 2 to 3 days, and other users shared stories of a child's symptoms vanishing after trying it ^³. Encouragingly, many medical professionals quickly posted their own videos warning people not to do this ^³. Still, the original claims reached large audiences, which is why it is worth addressing directly ^¹.

Why It Doesn't Work

Potatoes do contain vitamins, antioxidants, and some antifungal compounds, but there is no evidence at all that these can treat any infection in humans, whether bacterial or viral ^¹. Strep throat is caused by group A Streptococcus bacteria, and while a food might soothe throat symptoms, it does not kill the bacteria — that requires antibiotics ^⁴. Most sore throats are actually viral: strep accounts for only about 5% to 15% of cases in adults and 20% to 30% in children, or roughly 1 in 10 adults and 3 in 10 children ^⁶. Symptoms typically appear 2 to 5 days after exposure, and reliably clearing the infection takes a full course of antibiotics, usually 10 days of penicillin or amoxicillin ^⁶^⁷. The reason the trend seems convincing is a classic error in reasoning: strep sore throats are often self-limiting, so symptoms may fade on their own ^¹. As one toxicology expert put it, just because you drank potato juice and your strep symptoms went away does not mean the juice cured the infection, which can quietly persist ^¹.

Why It's Dangerous

The real hazard is using potato juice as a substitute for proper treatment ^¹. Untreated strep can spread and cause serious complications, including rheumatic fever, heart problems, kidney disease, and abscesses around the tonsils ^¹. Antibiotics specifically reduce the risk of these long-term complications, which is why doctors stress getting strep treated properly and promptly ^¹. Group A strep causes more than 616 million cases of sore throat worldwide each year, and starting antibiotics also cuts contagiousness within 24 to 48 hours ^⁶^⁷. One physician called a potato-juice video one of the most dangerous he had seen, warning parents not to treat a child's severe throat symptoms this way, because symptom relief does not mean the bacterial infection is gone ^². Swapping a proven medication for a vegetable juice is where a harmless-sounding trend becomes risky ^¹.

The Safety Catch With Raw Potatoes

Raw potatoes themselves come with cautions ^². They contain starches and compounds that can be difficult for the body to digest, which may cause gastrointestinal upset ^². More importantly, potatoes with green skin or sprouts contain solanine, a natural toxin that can cause poisoning, and cooking is what breaks solanine down ^². So raw potato juice is not risk-free even setting aside its ineffectiveness against infections ^³. Poison control experts specifically advise avoiding potatoes with green skin or sprouts ^³.

Is There Any Grain of Truth?

To be fair, potato juice is not entirely without study ^³. Some lab and animal research suggests it may help reduce certain gastrointestinal distress, such as soothing gut inflammation, though experts agree more research is needed and these findings are about digestion, not infections ^³. That limited, unrelated evidence is a long way from curing strep throat ^³. For any suspected strep or a severe sore throat, the clear advice is to see a healthcare provider, in person or by telemedicine, since antibiotics are the best treatment ^³.

The Fair Bottom Line

Raw potato juice does not cure strep throat or any infection — it may ease a symptom, but it cannot kill the bacteria, and the success stories reflect a sore throat resolving naturally while the infection may linger ^¹. Relying on it instead of antibiotics risks serious complications like rheumatic fever and kidney disease, and raw or green potatoes carry their own hazards ^². If you suspect strep, see a doctor — and this is general information, not medical advice ^³.

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Frequently Asked Questions

Does raw potato juice cure strep throat? No. There is no evidence it treats any infection, and it does not kill the bacteria that cause strep ^¹.

Why do people think potato juice works? Because strep sore throats often improve on their own, so symptom relief gets mistaken for a cure while the infection may persist ^¹.

Is it dangerous to treat strep with potato juice? Yes, if used instead of antibiotics, since untreated strep can cause rheumatic fever, kidney disease, and other complications ^¹.

Is drinking raw potato juice safe? It can cause digestive upset, and green or sprouted potatoes contain the toxin solanine, so caution is warranted ^².

What should I do if I have strep throat? See a healthcare provider promptly; antibiotics are the best treatment and reduce the risk of complications ^³.