Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any new or worsening symptoms 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), more depressed, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have any of these serious side effects: fast, pounding, or uneven heart rate; chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling; sudden numbness or weakness, especially on one side of the body; sudden headache, confusion, problems with vision, speech, or balance; feeling short of breath, even with mild exertion; swelling, rapid weight gain; confusion, hallucinations, or seizure (convulsions); easy bruising or bleeding, unusual weakness; restless muscle movements in your eyes, tongue, jaw, or neck; urinating more or less than usual; extreme thirst with headache, nausea, vomiting, and weakness; skin rash, bruising, severe tingling, numbness, pain, or muscle weakness.
Less serious side effects may be more likely to occur, such as: nausea, vomiting, stomach pain, loss of appetite; constipation or diarrhea; dry mouth, unpleasant taste; weight changes;
weakness, lack of coordination; feeling dizzy, drowsy, or tired; nightmares; blurred vision, headache, ringing in your ears; breast swelling (in men or women); or decreased sex drive, impotence, or difficulty having an orgasm.