One huge difference is Side effects occur when you are on the drug, they are a result of the drug's presence in your body. Withdrawal symptoms occur when you reduce the drug, they are a result of physiological dependence and the drug's absence at the accustomed level in your body. Mild side effects, such as nausea, might go away over time. In fact, doctors assume that ALL side effects will go away over time. However, this is not true, and continuing side effects indicate the drug and your b