It is possible that some individuals can in fact lose weight with this supplement, although it doesnt seem to work very well on average. At least, Garcinia Cambogia appears to be safe.
There are no serious side effects, only some reports of mild digestive issues (14). It is best to get a brand with at least 50 Hydroxycitric acid. The most common dosage is 500 mg, 3 times per day, half an hour before meals.