Initial Dosing; (Methylphenidate - naive patients)
18 mg once daily in the morning before breakfast.
For patients already receiving methylphenidate;
If switching from immediate release tablets 5 mg 2 or 3 times a day: 18 mg once daily.
If switching from immediate release tablets 10 mg 2 or 3 times a day: 36 mg once daily.
If switching from immediate release tablets 15 mg 2 or 3 times a day: 54 mg once daily.
If switching from immediate release tablets 20 mg 2 or 3 times a day: 72 mg once daily.
 Detailed Concerta dosage information
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is later than 6:00 p.m. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of methylphenidate could be fatal.
