First, stimulants, such as Vyvanse
and Focalin, have side effects of increasing heart rate and blood pressure
. I am not aware of increased risk of heart attack, per se, although if you have risk factors, such as hypertension, cigarette use, diabetes, high cholesterol, etc., stimulant medications may cause an extra stressor on the heart that could lead to a heart attack. Without evaluating you specifically, I cannot say for sure exactly what happened with you.