I take Pro-Vigil to stay awake, and it works pretty well for that as long as I am not too physically active. I have discovered that with the medication I am fine all day to do homework (sitting at a computer) and some light physical activity, but if I try to do moderate activities all day long I will crash hard. For me I just have to find the balance of how much physical activity I can fit into a day without making myself sicker. The amount I can handle seems pretty depressing compared with what I could do pre-MS, but I guess we all have to readjust our expectations to fit our new version of normal. :)
Be joyful in hope, patient in affliction, faithful in prayer (Romans 12:12).