available over the counter: no

uses: treatment of certain types of seizures

mechanism of action:  depresses activity of certain parts of the brain

side effects
• common: nausea, vomiting, loss of appetite, gastrointestinal cramps, weight loss, diarrhea
• less common: irritibility, headache, dizziness, sleep disturbance
• serious: sore throat, fever, swollen glands, weakness, confusion, lethargy

concerns: do not stop abruptly; taper over weeks to months