I'm an 80 yr old female who after chemo had Hcm. I experienced all the issues you described. My heart Dr ran tests on me and determined I was a perfect candidate for camzyos. I was on 5 mg 3 months and had improvenenr but my numbers not great. I was moved to 10 mg and stable here. Starting to step up exercising and much improved breathing. Please give it a chance. I live so grateful for the drug and life improvements. I have minor side effects mostly in the area of eating. Keep this group involved..WE CARE.