The maximum dose of isotretinoin should not exceed: (A) 30-60mg/kg, (B) 60-90 mg/kg, (C) 90-120 mg/kg, (D) 120-150 mg/kg
Answer is D. Oral isotretinoin duration of treatment varies according to dose but post-therapy relapse is minimized by treatment courses that amount to the total of 120-150 mg/kg Ref Harrison 20th edition pg 1233