AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping Available/5 (3, reviews).You can report an adverse event either online, by regular mail or by fax, using the contact information at the bottom of this page. Patients who have a condition called “left ventricular outlet obstruction” from valvular problems or heart muscle enlargement may get side effects such as fainting or light-headedness. Because patients with recent heart attacks or stroke, heart pains angina , heart failure, uncontrolled blood pressure or uncontrolled irregular heart beats, severe liver disease, and retinal eye problems were not studied with Cialis, Cialis is not recommended for these patients. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Physicians should discuss with patients the potential for CIALIS to augment the blood-pressure-lowering effect of alpha-blockers and antihypertensive medications. Cialis is not recommended for people taking any form of nitroglycerin because the combination may lower blood pressure to an unsafe level. This is high blood pressure that occurs in the main artery that carries blood from the right side of the heart the ventricle to the lungs.Cialis is a medication approved by the Food and Drug Administration (FDA) often used to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BPH) in . AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping Available/5 (3, reviews).  · Cialis. Descriptions. Tadalafil is used to treat men who have erectile dysfunction (also called sexual impotence). Tadalafil belongs to a group of medicines .Therefore the use of such treatments in combination with Cialis is not recommended. By controlling the enzyme, tadalafil helps to maintain an erection after the penis is stroked by increasing blood flow to the penis. Tadalafil belongs to a group of medicines called phosphodiesterase 5 PDE5 inhibitors. A small number of patients taking Cialis also reported abnormal vision. This is high blood pressure that occurs in the main artery that carries blood from the right side of the heart the ventricle to the lungs. Without physical action to the penis, such as that occurring during sexual intercourse, tadalafil will not work to cause an erection. Patients should seek prompt medical attention if their erection lasts longer than four hours.