There are a few drugs used as a non-stimulant treatment for ADHD. Their primary purpose is to increase levels of neurotransmitters in the body that is responsible for focus and attention. The most common non-stimulant medication includes Strattera, Intuniv and Adderall XR, which the FDA has approved. Non-stimulant medications do not have stimulant properties, meaning they affect chemicals in the brain that produce a calming effect without having the unpleasant side effects from stimulant medications that lead to insomnia and loss of appetite.