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Side Effects

Patients with heart problems who take generic Cialis  ( Japanese : シアリス ) may worsen heart-related side effects, including heart attack or stroke. Symptoms of a heart attack may be chest, shoulder, neck, or jaw pain; severe dizziness, headache, nausea, stomach pain, or vomiting; numbness of an arm or leg; fainting; or vision changes. Symptoms of a stroke may be confusion; vision or speech changes; one-sided weakness; or fainting. Seek help of your doctor if you experience these symptoms.  

This medicine may rarely cause a prolonged (e.g., more than 4 hours) or painful erection. If this is not treated, it could cause permanent sexual problems such as impotence. Seek medical attention right away if this occurs.  

Generic Cialis may occasionally create mild, temporary vision changes (e.g., blurred vision, decreased vision, sensitivity to light, blue/green color tint to vision), sudden decreases in hearing and loss of hearing. Don't forget to contact your doctor if they persist or become serious.  

Drug Interaction

Do not use other medicines or treatments for ED while you are taking Cialis without first checking with your doctor.

Patients taking a nitrate (e.g., isosorbide, nitroglycerin) in any form (e.g., tablet, capsule, patch, ointment), or nitroprusside should avoid this drug. It may not be suggested to take with other PDE5 inhibitor like sildenafil, vardenafil or another medicine that contains tadalafil.

Tadalafil also worsens the blood pressure lowering effects of some alpha-blocking drugs e.g., terazosin (Hytrin).