I take Cymbalta in the morning. It does not make me drowsy, I think it is even meant to give you energy.....
I tried to quit Cymbalta because it does not seem to gie me any benefit and there are definately side effects. It is a very bad drug to try and withdraw from. The withdrawal sickness is bad and can last several weeks. I would look into it before letting your daughter stay on it. The side effects include weight gain...most people claim about 40 pounds.....mine was 20, and some sexual libido dropoff....
I started taking it again when I found out how long my withdrawals would last, I could not let it affect my job for that long. I will have to wait until I can take vacation to try again. I truly wish I had not started taking it....