It could be that Adderall isn’t the right medication for him. It could be that he’s taking the medication inconsistently, which can cause different moods and such. It could be that you’ve caught him under more stress some days than others.
If he isn’t getting a doctor’s oversight when taking Adderall, he’s playing with fire, legally and physiologically. You can let him know you’re worried about him, but you can’t control his actions… only your own.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism