Buy Strattera 100 mg Online and get yourself back to routine productivity. It is a non-stimulant medication which is used to treat ADHD. If you have this question of what does strattera do,then the answer is that it allows the neurotransmitter norepinephrine to be available to the brain's neurons for longer resulting in improvement of focus in individuals. Now you may think of how long does Strattera stay in your body?. Firstly it can take 4-8 weeks for Stratter to reach the maximum therapeutic effect and once it reaches then it lasts 24 hours..