Noni (Morinda citrifolia) is a tropical fruit with a history in Polynesian traditional practices. People take it as juice, powder, or extract. Supplement makers promote it for antioxidant support and general wellness.
Most people take noni as a liquid juice or in capsules. Its effects remain uncertain because few high-quality clinical trials exist. The available evidence relies heavily on traditional use, not scientific research.
Noni contains a lot of potassium. This can be risky for people with kidney disease or those taking ACE inhibitors or potassium-sparing diuretics. A few case reports link noni to liver injury, so caution is needed, especially with long-term or high-dose use. No one has established a safe upper limit or how long you can take it.