I did such a stupid thing. I received my prescrption for Adderall XR, I usually had the 5mg and now I am on the 15mg. I forgot it so I took 7x15mg so it end up at 100mg but not at once, I took 2x15mg a while after 2x15mg and I was suppose to took once if need it 15mg but I forgot and I took 3x15mg, so it end up at 100mg if I am correct. Can a person take 100mg a day? I am so clumsy, I mistake the 15mg for the 5mg. The more I went up is 75mg, once or twice, is it dangerous if I took 100mg? I am so stupid and clumsy. I am fine now, I feel okay. I red that some person went up to 100mg, is it true? Hopefully someone can reply soon! Thanks!