Hello, I understand your problem. Being an hypertrophic cardiomyopathy you need to be careful the step you take may effect your heart. You cannot take whey protein because it may have some sideeffects. You may take milk instead of it because it also contains whey protein. If you're planning to workout then you need watch your heart rate. Just do moderate exercise of you are planning to. If you want take protein then there are other protein supplenents to take. Thank you