1. Modafinil also suppresses appetite. 2. It's easy to argue against the extremes. But nothing about using modafinil precludes sleeping 8 hours a day. The effe

1. Modafinil also suppresses appetite. 2. It's easy to argue against the extremes. But nothing about using modafinil precludes sleeping 8 hours a day. The effects usually last anywhere between 12 to 16 hours. So, for example, you can take it with breakfast and go to bed normally in the evening.