There are multiple appetite suppressant drugs on the market which are FDA APPROVED and over the counter drugs for weight loss . PHENQ is also a good supplement for natural weight loss and the most important advantage is that it doesn’t have any side effects. Appetite suppressant drugs like phentermine can help by reducing your appetite and the number of times you eat each day. This can in turn reduce the number of calories you consume each day. Phentermine is a weight loss pill that can help you lose weight over a short period of time. It is a prescription drug that stimulates the central nervous system.