Does clen affect your heartbeat? I've taken clen a few times without probs but this time everytime I take it my heart acts funny. It will beat normal for a few beats, then pause, then beat real hard (not fast just hard), then have a normal few beats. I can feel it sitting here and it gives me slight chest pain. Obviously im gonna stop taking it, I just had to pin point that that was causing it. Im also taking test e and just my nolva and femera. I know taurine is suppose to help this right? I havent taken any but I never have. Could that solve my problem? Maybe im just paranoid.