<s>[INST] i am taking proprananol for heart palpations,and they are not working being woken up with very fast heart beat and it makes me feel shakey,and tired even after taking beteabloker takes a long time to calm down,and repeats at any time of day also makes me feel sick,cardiology said it was physiological tachyacardia,do i need to go back to see them symtoms are getting worse [/INST] Hello, Yes, you need to see your doctor again, and I prefer to do some more tests like thyroid function test and complete blood picture. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Salah Saad Shoman, Internal Medicine Specialist </s>