·	In another randomized, crossover study, 20 mg Levitra was administered at 8:00 a.m. after an overnight fast or immediately after consuming a high-fat breakfast (57 per cent fat), or at 6:00 p.m. on an empty stomach or after consuming a moderate-fat meal (30 per cent fat).

·	Results showed that Levitra PK [effectiveness] parameters were largely unaffected by food, except when taken with a meal with high-fat content (more than 55 per cent). In this situation, absorption was delayed by one hour

·	In a randomized, double-blind, three-fold crossover study, 20 mg Levitra or placebo was administered orally together with alcohol (0.5 g/kg in 200 ml of orange juice) or placebo

·	Results showed that Levitra PK parameters were largely unaffected by alcohol

·

take any medicines called "nitrates" (See "What important information should you know about Levitra For Erectile Dysfunction?"). Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm. Medicines called nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbide dinitrate or isosorbide mononitrate. Some recreational drugs called "poppers" also contain nitrates, such as amyl nitrate and butyl nitrate. Do not use Levitra For Erectile Dysfunction if you are using these drugs. Ask your doctor or pharmacist if you are not sure if any of your medicines are nitrates.

·	use recreational drugs called "poppers" like amyl nitrate and butyl nitrate.

·	take medicines called "alpha-blockers." Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. If Levitra For Erectile Dysfunction is taken with alpha-blockers, your blood pressure could suddenly drop to an unsafe level. You could get dizzy and faint.

·	you have been told by your healthcare provider to not have sexual activity because of health problems. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.

·	are allergic to Levitra For Erectile Dysfunction or any of its ingredients. The active ingredient in Levitra For Erectile Dysfunction is called vardenafil.

·	Active Ingredient: vardenafil hydrochloride

·	Inactive Ingredients: microcrystalline cellulose, crospovidone, colloidal silicon dioxide, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, yellow ferric oxide, and red ferric oxide.

·	have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your doctor if it is safe for you to have sexual activity.

·	have low blood pressure or have high blood pressure that is not controlled

·	have had a stroke

·	or any family members have a rare heart condition known as prolongation of the QT interval (long QT syndrome)

·	have liver problems

·	have kidney problems and require dialysis

·	have retinitis pigmentosa, a rare genetic (runs in families) eye disease

·	have stomach ulcers

·	have a bleeding problem

·	have a deformed penis shape or Peyronie's disease

·	have had an erection that lasted more than 4 hours

·	have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia