Follow the directions for using this medicine provided by your doctor. Take Levitra Professional exactly as directed.
The usual dosage of Levitra Professional is one tablet taken 25 to 60 minutes before sexual activity.
Talk to your doctor before taking any PDE5 inhibitors including Viagra, Cialis, Levitra or their generic equivalents, if:
you are allergic to any medicines;
you are taking or have recently taken nitrates such as nitroglycerin;
you have a physical abnormality of your penis; liver or kidney problems; angina, heart disease or a low blood pressure; or you have recently suffered a stroke.