Is it true that if my medicine does not make me feel better, it's not working so I don't need to take it?

False-many medicines are are given to treat silent diseases like high blood pressure, high cholesterol and diabetes (high blood sugar). these are called silent diseases because the damage they do is slow and cannot be felt for many years until it is too late to stop. because illnesses like this do not make you feel sick, medicines wont make you feel better. in fact, they sometimes will make you feel worse as your body gets used to having a normal blood pressure, blood sugar, etc. if you start taking a medicine and feel worse, know that the medicine is working. if you feel so bad that you do not want to take medicine anymore, speak to your doctor or pharmacist before stopping it. this is important because they may have tips to help you feel better, and because in some cases, suddenly stopping a medicine can actually cause harm.