If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include: severe mental/mood changes, seizures, severe or persistent headache, severe restlessness, fast breathing.
If you miss a dose, use it as soon as you remember in the morning hours. If it is less than 6 hours until bedtime, or if it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Do not share this medication with others. It is against the law.
Laboratory and/or medical tests (e.g., blood pressure, heart rate, growth monitoring in children) may be performed to check for side effects. Consult your doctor for more details.