If you have pre-existing medical condition and you are thinking of buying diet pills, stop, research and see your doctor to find out the side effects of diet pills. Appetite suppressant diet pill could have some effect on the nervous system thus it may could trigger high blood pressure, irregular heart beat and cardiac arrest. Some fat blocker pills may cause stomach problems such as cramping, diarrhea and gas. There are certain diet pills that are FDA approved and you have to look for that seal of approval when
shopping one for you.