"was on dexedrine for 10 years. loved it. just stopped last month because i had tachycardia and an ectopic arrhythmia. both started about 2 years ago, and i only recently had confirmed that both are non-existent when off of dexedrine. have been taking 30mg/day. switching to strattera tomorrow, hoping it can provide all the benefits of dexedrine without the heart issues!"