u/Future_Upstairs8435

My mom has hcm and was started on mavacamten. She felt better in weeks. Her breathlessness had reduced and she felt more energetic. The lovt score had improved too in first 2 months. But then she started feeling mildly breathless ( though still much better than it was before meds). And in her latest echo, they found her ef dropped to 43%. Doc has discontinued mavacamten now and is focusing on resuming her ef. But we are sad that this did not work out. Has anyone gone through this ?