Dietary medications are always a possible risk especially for people who have heart disease or hypertension. There is a balance of risks since in some people the obesity or excess weight is a severe health or social problem. It is certainly harmful in the long run to use effective diet pills since one can be sure that if they work they eventually harm. Another problem is that the weight might return when the pills are stopped. Thus it becomes an individual decision, but if they were the right answer. obesity would be solved.