Acai Berry is a supplement that aids in weight loss. Some supplements help to curve appetites, some boost metoablism and energy. However they work, most of the time they only aid in weight loss and are not a miracle supplement. To get the best results you must exercise and eat correctly. Although the acai berry does work if used correctly. As with any weight loss supplement it does not make you lose weight over night. However, the acai berry is a safe and natural fruit, verses most weight loss pills today that are not natural and are full of unknown ingredients. So bottom line, acai berry is a safe and natural way to lose weight. It does work and is even more effective if used along with dieting and exercise.