Get emergency medical help if you have signs of an allergic reaction to Qsymia: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), depressed, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have:
unusual changes in mood or behavior;
confusion, trouble concentrating, problems with speech or memory;
fast or pounding heartbeats while you are resting;
a seizure;
signs of a kidney stone - severe pain in your side or lower back, painful or difficult urination; or
signs of too much acid in your blood - loss of appetite, tiredness, thinking problems, irregular heartbeats.
Common Qsymia side effects may include:
dizziness;
constipation;
numbness or tingly feeling;
sleep problems (insomnia); or
dry mouth, changes in your sense of taste.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Qsymia side effects (more detail)
