People who have used the supplement say that it helps them eat less and still feel full. Most people use the product only for short periods of up to 12 weeks. It is not recommended for pregnant or breastfeeding women because long-term side effects aren't currently known. In general, side effects reported have been mild, such as nausea or headache.
The best way to incorporate any natural supplement for weight loss is by talking with your doctor and using it as part of a larger lifestyle change which focuses on healthy foods, drinking lots of water, and exercising regularly.