So, yesterday decided to start using Rit again, I was just so tired of being so sluggish in the AM. I took 2 doses (what I'm supposed to take) and after the 2nd dose ,I was getting palpitations. I could have been having a friggin heart attack for all I knew. This stuff is awful. I hate that I have to take it. I'm just a walking pharmacy, I'm 40 and thanks to all these drugs, I doubt I'll live to see 45. And I don't even care anymore.