CP 690,550 in oral solution administered twice daily (BID) to patients according to weight as indicated below:

Body Weight (kg) Dose (mg) Volume (mL) 5-11 1 1 12-18 1.5 1.5 19-24 2 2 25-31 2.5 2.5 32-39 3 3 40 and over 5 5 For patients weighing 40 kg or more, CP 690,550, 5 mg BID is administered in tablet form or oral solution according to patient preference.

Read more: http://www.clinicaltrials.gov/ct2/show/NCT01500551?cond=%22Arthritis%22&lup_s=08/23/2013&lup_d=30