If you take a stimulant drug, you can experience side effects that can include loss of appetite and weight loss. Children can also experience reduced growth. Your doctor may prescribe a “drug holiday,” which is a deliberate break in treatment for a specific amount of time and purpose, such as identifying side effects. For example, your doctor may prescribe a drug holiday for your child during the summer when school is not in session. Everyone who takes stimulant drugs should be periodically re-evaluated to see if the drug is still effective and needed.