I am on 50 mg of Vyvanse at the moment and I work a busy schedule. I am a 37 year old who is new to these types of medications. I started on Strattera and switched to Vyvanse. I take the medication very early in the morning because I work from 6-3. I usually take the meds about 5:30 am and it takes about an hour to take affect. The medication works great but every day like clockwork I feel exhausted around 2:30. This is a problem being I am a father of two and I hate being exhausted for the rest of the day. Does anyone have any suggestions for me?