Severe allergic reactions (rash; hives; itching; difficulty breathing;
- tightness in the chest;
- swelling of the mouth, face, lips, or tongue);
- bizarre behavior;
- black or bloody stools;
- chest pain;
- confusion;
- decreased concentration;
- fainting;
- fast or irregular heartbeat;
- hallucinations;
- memory loss;
- menstrual period changes;
- new or worsening agitation, panic attacks, aggressiveness, impulsiveness, irritability, hostility, exaggerated feeling of well-being, restlessness, or inability to sit still;
- persistent or severe ringing in the ears;persistent, painful erection;
- red, swollen, blistered, or peeling skin; seizures;
- severe or persistent anxiety or trouble sleeping;
- severe or persistent headache;
- stomach pain; suicidal thoughts or attempts;
- tremor;
- unusual or severe mental or mood changes;
- unusual weakness;
- worsening of depression.