Conversation: The conversation between human and AI assistant.
[|Human|] hi! i took vyvanse before I had a swim meet and after two races I felt extremely lightheaded and my heart was beating extremely fast. I ve been swimming for 8 years and that has never happened. I couldn t stand and couldn t keep my eyes open. I smoked early that day but was not high by the time of the meet. I also have high blood pressure. is it the medicine or my blood pressure or what?
[|AI|]  DearWelcome to ChatDoctorWe understand your concerns went through your details. Vyvanse is a central nervous system stimulant. It affects those brain parts which helps in hyperactivity and impulse control. You took it to have good performance in swimming. That is natural and many does it. Were you stressed and anxious prior to the swimming competition? That question ends answer. Your answer is that answer. Don't worry. To be on a safer side, please consult a physician. If you still need my assistance in this regard, please use this link. http://goo.gl/aYW2pR. Please remember to describe the whole problem with full detail. Hope this answers your query. Available for further clarifications. Good luck.