This medicine also works best when you take it an hour before sex on an empty stomach. Do not swallow Staxyn with liquid. Sildenafil Viagra. Grapefruit and Seville oranges may interact with vardenafil and cause side effects. You can take this medicine with or without food 30 minutes before sex, depending on the dose.Levitra is a medication used to treat erectile dysfunction in men. Our page provides detailed information on how Levitra works, its dosage, potential side effects, and precautions to take before using it. Whether you’re a first-time user or looking to switch to a new medication, our comprehensive guide can help you make an informed decision about using Levitra. , 5, 10 or 20 mg, up to once daily: 25, 50, or mg, up to once daily: Price: from around $47 for 10 tablets of 20 mg of generic vardenafil: from around $12 for 30 tablets of mg of. Staxyn (vardenafil disintegrating tablets) should not be used in place of Levitra (vardenafil regular tablets). Avoid medication errors by using only the form and strength your doctor prescribes. 20 mg once a day Patients on stable alpha blocker therapy: Initial dose: 5 mg orally once a day.
