Noni juice, made from the fruit of morinda citrifolia, has been used in Polynesian folk remedies for centuries and has been marketed as a health food with numerous benefits. Scientific research on noni juice is limited, but a few side effects have been found.
Minor Side Effects
Minor side effects include belching, diarrhea, headache, mild rash and pimples. Women taking noni juice might experience heavier menstruation.
Serious Side Effects
According to an article published in the World Journal of Gastroenteroly, a couple of people in Austria have developed liver damage after consuming excessive amounts of noni juice.
Allergy
Allergic reactions to noni juice are rare but include respiratory difficulty, gas, nausea and vomiting. Allergic reactions to noni juice usually subside within 24 hours.
Contraindications
Because noni juice is high in sugar, diabetics should be aware of blood glucose levels when drinking it.
Safe Dosage
Most side effects of noni juice coincide with the consumption of large amounts of the juice. The noni supplement information written by Dr. Ray Sahelian claims the safe dosage of noni is one to two capsules to day, or 2 tbsp. of noni juice.