Selumetinib mainly treats those icky plexiform neurofibromas in people with neurofibromatosis type 1. It works by stopping that MEK signaling stuff. You can get this drug in two strengths—10 mg or 25 mg pills.
The dose doc usually recommends is two 25 mg pills, taken with nothing in your stomach twice a day. Each bottle of the stuff comes with 60 pills.