I don't think it's a wise choice AT ALL if you have the urge to take more once the drug is wearing off to go to a doctor and get a prescription. I did this very thing 2 different times since i consider adderall and myself an on-off love/hate relationship. What I'm hearing from you seems like a sign of addiction which can only lead to a destructive, dark, unpleasant place. I myself have been diagnosed with ADD but I just have accepted the fact that I am different than many people who take the drug who use it as prescribed. Only then does it actually help you when you don't take more than your daily dose. This is because once you start abusing it, your tolerance will build and build causing that euphoric high or "i can do anything and beyond!" feeling your going for to get harder to achieve. However, the purpose of Adderall, although it does produce those sort of effects on the brain, is not to stay high, but to maintain a steady dosage so your chemicals can balance out to where it is much easier to focus and pay attention. Those who do this as prescribed do not have a desire to take more if they take the same dose everyday and not skip days or weeks. I also firmly believe these people are not addicts, like myself. Therefore, I STRONGLY suggest that you stop using Adderall period. It starts to become such an essential part of one's day and to me, if I didn't have anymore of my script and couldn't find any anywhere else, I was useless and blew off everything, no matter how important it was. Anyway, hope this helps somewhat and good luck. I would suggest something like Stratera or Well-Butrin is what I take now that helps me a lot with my ADD and depression. I have been very very low since coming off of adderall because it is essentially speed! I personally believe it is unneccessary and wrong to so quickly prescribe; but I can't help but sometimes have the urge to go to another doctor and pull the same scam i've done twice before. I've only set myself back further and further and I'm ready to finally divorce that demon of mine.