Morinda citrifolia, more commonly known as noni, is an evergreen plant that grows naturally in Polynesia. The plant has uses in traditional medicine for healing infections, wounds and skin conditions, according to the Memorial Sloan-Kettering Cancer Center (MSKCC). Marketed under brands such as Tahitian Noni Juice, products containing Morinda citrifolia are promoted for boosting the immune system, cancer treatment, relief of chronic fatigue syndrome and high blood pressure. The MSKCC notes that research with humans is lacking. Ray Sahelian, a physician specializing in natural supplements, recommends drinking no more than one ounce of noni juice every other day. Side effects are unlikely.
Elimination Effects
Some people who drink Morinda citrifolia juice may develop diarrhea, according to Sahelian. The American Cancer Society notes that noni juice also may turn urine pink or reddish.
Blood Sugar Effects
Noni, like most fruit juice, is high in sugar content. Additionally, Tahitian Noni Juice has added grape juice to improve flavor. The NoniJuice.us website explains that Tahitian Noni Juice contains about 2 grams of sugar per serving. Diabetic patients should be careful about including Tahitian Noni Juice in a sugar-restricted diet as it can elevate blood glucose.
Liver Toxicity
Rarely, noni juice can be toxic to the liver, which may be due to its anthraquinone content, according to the MSKCC. Two cases involving liver damage after excessive intake of noni juice have been reported, according to Sahelian.
Hyperkalemia
Tahitian Noni Juice is high in potassium. This is not a problem for most people, but drinking large amounts can cause side effects in patients with kidney disorders, or those taking any of several types of medication to reduce high blood pressure. High potassium blood levels, a condition called hyperkalemia, can cause symptoms of tingling or numbness of the hands and feet, muscle weakness, temporary paralysis and irregular heartbeat.
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