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Metabolism: Vardenafil is metabolized predominantly by the hepatic enzyme CYP3A4, with contribution from the CYP3A5 and CYP2C isoforms. The maximum dose in patients with moderate hepatic impairment should not exceed 10 mg. Continue to take it as directed by your doctor. Patients should be counseled that concomitant use of Levitra with nitrates could cause blood pressure to suddenly drop to an unsafe level, resulting in dizziness, syncope, or even heart attack or stroke. Levitra may be taken with or without meals. Allow 24 hours to pass between doses. The European trial confirmed these results. When vasodilators are used in combination, an additive effect on viagra cialis levitra side effects pressure may be anticipated. Taking Levitra with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke, or heart attack. Pregnancy, Nursing Mothers and Pediatric Use Levitra is not indicated for use in women, newborns, or children. Figure 1: Plasma Vardenafil Concentration (Mean ± SD) Curve for a Single 20 mg Levitra Dose Absorption: Vardenafil is rapidly absorbed with absolute bioavailability of approximately 15%. (See Figure 2.) Figure 2: Placebo-subtracted point estimates (with 90% CI) of mean maximal blood pressure and heart rate effects of pre-dosing with Levitra 20 mg at 24, 8, 4, and 1 hour before 0.4 mg NTG sublingually. The primary endpoints were assessed at 3 months. WHAT SHOULD YOU DISCUSS WITH YOUR DOCTOR BEFORE TAKING Levitra? Before taking Levitra, tell your doctor about all your medical problems, including if viagra cialis levitra side effects have heart problems such as angina, heart failure, irregular heartbeats, or have viagra cialis levitra side effects a heart attack. It is not clear whether vardenafil is the actual cause of vision loss.Stop using vardenafil and get emergency medical help if you have sudden vision loss. FDA pregnancy category B: viagra cialis levitra side effects vardenafil is not for use in women, this medication is not expected to be harmful to an unborn baby. There were no cases of syncope.

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