However, because medications affect people differently, it is possible that a person taking Adderall can feel increased anxiety when they take the drug to treat their ADHD symptoms. The ADAA notes that research shows that stimulant drugs like Adderall and non-stimulant medications can help people with ADHD improve their ability to concentrate, pay attention, and control their impulsiveness. Dose titration Side effects Anxiety Can Be A Side Effect Of Taking Adderall Only then can you proceed to find the best form of that medication. Initial trials become a little less confusing if you realize that the first job is to find whether a particular drug reduces ADHD symptoms. The marketplace is getting more complicated all the time, but most of the many options available are simply different preparations of methylphenidate, amphetamine, or a nonstimulant. But we cannot know ahead of time if you are in the improved 80 percent or the disappointed 20 percent until we do a trial. It is often said that the best medications have an 80 percent efficacy rate, which is actually quite high in the larger world of prescription medication efficacy testing.