"i have severe adhd . for a while i didn&#039;t know what was wrong with me, constantly day dreaming,lazy, unorganized, acting impulsively and very hyper. the medicine has changed my life. all these symptoms are gone except i&#039;m still a bit hyper and impulsive but only slightly. it does exactly what it says on the tin and changed my life dramatically. i could actually focus. bad things would be if you are sensitive to stimulants like coffee. it will make you jittery, it gives you a slight mood and energy boost. i&#039;d recommend taking it in small doses first. "