I used it and I hated the way my heart felt. Tried so hard to make it work but stoped after a week and never used again. And this is all with an above average swimmers heart. I can’t imagine the abuse done on a weaker heart with the substance. This was 30 years ago. I would advise to stay far away.
Clen side effects are absolutely brutal on their own......let alone adding it to a cycle. It is nasty on the heart too. The actual fat loss results from it are so minimal that you can easily just get that back through diet and training/cardio.