Before taking this medicine

You should not take Cialis if you are allergic to tadalafil. Taking Cialis with certain other medicines can cause a sudden and serious decrease in blood pressure. Do not take this medicine if you also use: riociguat (to treat pulmonary arterial hypertension); or a nitrate drug (for chest pain or heart problems) such as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, or recreational drugs such as amyl nitrate or nitrite "poppers". Some tadalafil can remain in your bloodstream for 2 or more days after each dose you take (longer if you have liver or kidney disease). Avoid nitrate use during this time. To make sure this Cialis is safe for you, tell your doctor if you have ever had: heart disease or heart rhythm problems; a heart attack or stroke; angina (chest pain), high or low blood pressure; pulmonary hypertension (unless you are taking tadalafil for this); a condition called pulmonary veno-occlusive disease (narrowing of the veins that carry blood from the lungs to the heart); liver or kidney disease (or if you are on dialysis); vision loss, or retinitis pigmentosa (an inherited condition of the eye); a bleeding disorder; a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia; a physical deformity of the penis (such as Peyronie's disease), or an erection lasting longer than 4 hours; a stomach ulcer; or health problems that make sexual activity unsafe. Sudden vision loss has occurred in a small number of people taking medicines like tadalafil (Viagra or others). Most of these people already had certain eye problems or had high cholesterol, diabetes, coronary artery disease, a history of smoking, or were over 50 years old). It is not clear whether the medicine was the actual cause of vision loss.

Side effects

Get emergency medical help if you have signs of an allergic reaction to Cialis: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop and get medical help at once if you have nausea, chest pain, or dizziness during sex. You could be having a life-threatening side effect. Stop using this medicine and call your doctor at once if you have: a light-headed feeling, like you might pass out; an erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis); vision changes or sudden vision loss; ringing in your ears or sudden hearing loss; or heart attack symptoms - chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating. Common Cialis side effects may include: headache; flushing (warmth, redness, or tingly feeling); nausea, upset stomach; stuffy nose; or muscle pain, back pain, pain in your arms, legs, or back.

Precaution

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Cialis only for the indication prescribed. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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