Caffeine is also a stimulant. By taking your stimulant medication with coffee, you’re essentially amplifying it, which is likely the reason for your dizziness. Try decaf or no coffee for a couple days and see if that eliminates the dizziness. If not, discuss it with your prescribing doctor ASAP.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism