"in the 6th grade i missed two consecutive days, then took my pill as i would any other day. throughout the day i felt terrible and eventually i went to the nurse. she took my heart rate and said it would&#039;ve been okay if i had just sprinted a mile, but i had been sitting in class. she checked again 10 minutes later and my heart rate was slower than it should have been at a resting state. she called my parents and i went to the doctor immediately. i had to be hooked up to machines and monitored. the nurse said i was lucky not to have a heart attack that day. i&#039;ve been scared of stratera/adderall/ritalin ever since."