Hello Dr My son is 6 years old. Last week he was suffering from high fever more 100 temperature. We gave him calpol syrup 5ml every 4 hours but fever didnot come down at all. Next day we tried with Adol 5ml his fever came down. When he had fever his heart was beating very high? I notice this when I kept my hand on my son s chest. I apprecaite if you could provide the answer why the hearting was beating heavily??