It's obvious you are taking Adderall, as prescribed, and I think it's wonderful you have had successful treatment with it, as others with ADHD undoubtedly have. Unfortunately, I respectfully disagree, that it's "highly unlikely" GZ has not abused it, simply because he too was prescribed Adderall therapeutically. ...Not only is the potential for abuse and addiction for Adderall, extremely high, but it goes without saying that the overwhelming majority of Adderall addicts are those who were initially prescribed the drug therapeutically. This drug stimulates the "pleasure center" of the brain, and the urge to take more than is prescribed for heightened effect is all too common. Users then feel the need to take more and more Adderall to re-create or sustain this "rush." As the overuse pattern progresses and the onset of addiction begins they often resort to a variety of methods to obtain the extra drugs they crave, from doctor-shopping for multiple scripts, to ordering them from online (easier than you would imagine), and/or buying them on the street (where Adderall is called "college crack," among other things) ...I know of more cases than I can count like this, where all the while the family physician or psych doc who first prescribed the drug, and continues to do so, remains clueless...
All in all, no two people are alike, and some are at greater risk than others for becoming Adderall addicts; risk factors include a family background of alcohol or drug abuse, "stressful circumstances that the drug seems to alleviate initially," and individual emotional or personality traits. And while we clearly do not know enough about GZ, his family history or his Adderall intake to make any kind of real determination as to whether he has always adhered to Adderall as prescribed, or if he has ever abused it, we do know that misuse of Adderall on it's own can cause, paranoia, aggression and feelings of hostility. So, I, for one, can't help but wonder if drug tests had been performed on George that fateful night, what, if anything, they may have shown.