The portion of Isotretinoin 40 mg containers shifts from one individual to another, and relies upon your body weight. The standard beginning portion is 0.5mg per kilogram body weight each day (0.5 mg/kg/day). So in the event that you weigh 60kg, your portion will as a rule start at 30mg per day. For the most part, you take isotretinoin cases a few times per day.