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Do not take tadalafil if you are also using certain medicines for chest pain or heart problems called nitrates. These include nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate, butyl nitrate or nitrite ("poppers"). Taking tadalafil with a nitrate can cause a sudden and serious decrease in blood pressure. Cialis is a prescription medication, and you should take only the prescribed amount. The dose may be 10 or 20 mg for occasional use before sexual activity or 2.5 or 5 mg for ongoing daily use.

As with any drug, never change your dosage of Cialis without your doctor’s recommendation. If you have questions about the dosage of Cialis that’s right for you, talk with your doctor. If you have questions about how to take Cialis, talk with your doctor or pharmacist. If you have additional questions about the use of Cialis in older adults, talk with your doctor or pharmacist.

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