Cialis (tadalafil) is efficient in the treatment of erectile dysfunction no matter what the reasons for this condition are. However, people taking this medicine without any particular medical reason are at a higher risk of developing an addiction – which means they will not be able to perform sexually in the future without taking Cialis. Tell your health care provider if you are planning on eating grapefruit or drinking grapefruit juice when taking this medicine, as it may affect the efficiency of your treatment. It’s important that you tell your health care provider about any health condition you have ever been diagnosed with – as some of them may potentially become risk factors for developing serious side effects or can render your treatment less efficient. In other cases additional tests will be required to establish how efficient Cialis is going to be for you. Make sure your health care provider knows that you have some eye disease running in your family, condition that affects the shape of the penis, irregular heartbeat, liver, kidney, heart disease, blood cell problems, ulcers in the stomach or intestine, a history of a heart attack or stroke, diabetes, high cholesterol, high or low blood pressure, chest pain or bleeding disorder. Some of the side effects that need to be reported only if they change in intensity or become bothersome include headache, indigestion or heartburn, diarrhea, flushing, pain in the back or muscles, stomach pain or cough. Do not share your Cialis with other people to whom it was not prescribed.