I m a 22 year old male. I am currently taking adderall to treat adult ADD. About two days ago I accidently took an extra dose of adderall maybe an hour after taking my first dose in the morning. I m only suppose to take one dose per day. I figured I would be ok since my dosage is only 10mg per day and I knew that many patients are prescribed 20 or higher. I went to go work out and as I was exercising I experienced what I think were heart palpatations. My heart seemed to skipped a beat and then began to flutter. I sat down for a few moments, went back to normal, and cautiously finished my work out. Since then however I ve noticed some signs that concern me. I feel minor and temporary aches and pains in my chest and arm. I feel tightness in my lower jaw. I ve felt weak and tired. Just this morning I had some minor stomach cramps and my stool was looser than usual though I wouldn t call it diarreah. I checked my blood pressure and it s been high (I m usually a healthy person and have never had high blood pressure before). Right now my blood pressure is 134/74 but it s gotten as high as 140/83. My resting heart rate has stayed pretty low however (between 58 and 70 beats per minute). Anyway I was wondering how sever these symptoms were, what I should do about it, and how long they re likely to last. Sorry this is so long but I d appreciate some advice. Thanks