I have had it last year few times from home made batch thought I may have made it wrong so I tossed it all after the third incident no family history and I had my heart checked after the first few times all checked out good went full year blast and cruise all was well till this second shot on new cycle of 600 test e 800 mast e and proviron maybe I should lower dose until labs done I was good on just test and a mast tren test blend with 151 prior to this cycle