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Table 1 Amounts of Immediate-Release (IR) and Extended-Release (ER) Methylphenidate in Available Dosage forms of Metadate CD and Concertaa

From: Efficacy of two once-daily methylphenidate formulations compared across dose levels at different times of the day: Preliminary indications from a secondary analysis of the COMACS study data

 

IR MPH

ER MPH

18 mg CON

4 mg

14 mg

20 mg MCD

6 mg

14 mg

36 mg CON

8 mg

28 mg

40 mg MCD (2 × 20 mg capsules)

12 mg

28 mg

54 mg CON

12 mg

42 mg

60 mg MCD (3 × 20 mg capsules)

18 mg

42 mg

  1. a Recently, a 10- and 30-mg dose strength of Metadate CD and a 27-mg dose strength of Concerta have become available. These were not available at the time of the COMACS study.