What side effects can this medication cause? Most online providers require a picture of a valid ID, a selfie showing your face, and a recent blood pressure reading taken with a home blood pressure monitor or by a medical provider. The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire. Tadalafil Adcirca is used to improve the ability to exercise in people with pulmonary arterial hypertension PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness. This is important for your overall health and safety, as certain medications can negatively interact with each other or cause existing conditions to worsen.Tadalafil is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). It is sometimes known by its generic name tadalafil, and sometimes known by its trade name, Cialis. There are also other brands of this medicine available.  · Alpha blockers: If you’re adding Cialis to an alpha blocker, it’s recommended to start with the lowest dose (for ED only). Cialis and alpha blockers shouldn’t be taken together for BPH. Ketoconazole: The maximum Cialis dosage with ketoconazole is 10 mg once in a hour period for as-needed dosing, or mg for daily dosing. The fact that it comes in a low dose of milligrams (mg) also means that you can take Cialis every day. A daily dose will ensure that the drug’s always in your system. mg, 5 mg, 10 mg.