I'm not sure about your specific condition but I was diagnosed with CHF a little over a year ago, EF around 15% at 39 yo. It's now back to about 45%. My cardiologist strongly recommended against weighlifting, at least until I was compeltely recovered, unless it was very low weight with high reps. I tried heavy weights at about EF = 30% and felt it was too much of a strain. His advice was that weighlifting strains the heart and raises your bp, exactly the opposite of what you need to recover. I just recently started again when I got the 45% result and so far no problems, I also bike and run 4-5x week. My only supplement is creatine, meds are Diovan and Coreg CR, plus the ICD they stuck in. I ran across a study that found weightlifting on it's own is not helpful for CHF patients but combined with aerobics may be ok. The study concluded straight aerobic exercise without weightlifting is the most beneficial for CHF, no surprise. Hope some of that helps, take it slow and ease back in to it, I'd recommend ditching the supplements.