Most people don't have any side effects, and when people do experience side effects it is usually just in the initial few weeks while the body is adjusting. Very occasionally, some bloating and mild nausea can occur, again this is brief when it does happen. The DHEA can cause acne in some people, but again, this is unusual and temporary.
Don't be alarmed if you experience some bloating and water weight for the first couple of weeks while your body gets used to the medications. This will come off quickly and it will become easier to lose weight in the long run.