Headache, nausea, vomiting, fatigue, muscle pain, or weakness may occur. If these symptoms continue or become bothersome, inform your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: development of a limp, persistent fatigue, unusual/unexplained weight gain, persistent cold intolerance, persistent slow heartbeat, fast heartbeat, ear pain/itching, hearing problems, joint/hip/knee pain, numbness/tingling, unusual increase in thirst or urination, swelling hands/ankles/feet, change in the appearance or size of any mole, persistent nausea/vomiting, severe stomach/abdominal pain.
Get medical help right away if you have any very serious side effects, including: vision problems/changes, seizure, severe headache.
Rare (possibly fatal) lung/breathing problems may be cause by this medication in children with Prader-Willi syndrome. Those at higher risk include males, severely overweight children, or those with serious lung/breathing problems ( e.g., sleep apnea, lung infections, lung disease). Children should be check for certain breathing problems (upper airway obstruction) before and during treatment. Heavy snoring or irregular breathing during sleep (sleep apnea) are signs of airway obstruction. Tell the doctor right away if these signs occur. Also report any signs of lung infection, such as fever, persistent cough, or trouble breathing.