Good Morning, Thank you for sharing! I'm so sorry you're feeling poorly, and admire you for not giving up. I do take a cardiac medicine to keep my heartbeat from being too fast, and to prevent shaking, but shall hold off just now on saying more, since it may be in a class of medicines not appropriate for you. if it's alll right with you, would you be so kind as to say what your diagnoses are? Last but not least, I also have suffered from this same intensity of tiredness, and lack of energy since childhood, and am still young. But I have been safely rescued from all of it, several times, easily, safely, with zero side effects, and felt super-healthy. What helped me was medication, but not cardiac ones, and there may be a chance that one of these same medicines might really give you back your energy and wellness. Take good care!