Hello, Maddieg and welcome to NeuroTalk
The downside to Adderall and some of the other ADD meds is the "crash" that can be experienced by some who use them. There are a couple of choices with Adderall - regular Adderall or Adderall XR.
I am using the regular Adderall. They are 5 mg and right now I can take 3 of them a day. Even though they are short acting (3 to 5 hours) I feel more in control with how much I want to take.
The Adderall XR is longer lasting with a steady release throughout the day. Some will notice when it's leaving the body (crash), some do not.
Talk to your doctor. If you are using the XR you might be able to use a small dose of the regular to possibly avoid the crash towards the end of the day. However, taking Adderall later in the day might keep you up.
If you don't like Adderall there are other ADD meds you could try.