Can you see a doctor where you are to consult on the blood pressure? Blood thinners (e.g. aspirin, warfarin/coumadin) are not given for high blood pressure. They are typically given to people at high risk for blood clots. But there are other medications for high blood pressure. I do think a BP of 160/100 for any length of time should be paid attention to. What is your BP when you are not on Ritalin? When you are not on stimulant meds of any kind?