Other risk factors for erectile dysfunction include neurologic problems multiple sclerosis, stroke , depression and medications for treating diabetes, hypertension, heart disease and depression. Grapefruit and Seville oranges may interact with vardenafil and cause side effects. Those with pre-existing conditions should always consult a healthcare provider before taking new medications or supplements. Hypotension was not observed when vardenafil 5 mg and terazosin were administered 6 hours apart. Other conditions that may disqualify you from an ED prescription include a history of stroke, kidney or liver disease, cancer, diabetes, or a bleeding disorder.Vardenafil HCl is a nearly colorless, solid substance with a molecular weight of g/mol and a solubility of mg/mL in water. LEVITRA is formulated as orange, round, film-coated tablets with “BAYER” cross debossed on one side and “”, “5”, “10”, and “20” on the other side corresponding to mg, 5 mg, 10 mg, and 20 mg of .  · General Dose Information. For most patients, the recommended starting dose of LEVITRA is 10 mg, taken orally, as needed, approximately 60 minutes before sexual activity. The dose may be increased to a maximum recommended dose of 20 mg or decreased to 5 mg based on efficacy and side effects. The maximum recommended . 20mg, 30 tablets. Get free coupon. Amoxicillin mg, 21 capsules. Get free coupon. Azithromycin tadalafil (Cialis), vardenafil (formerly sold under the brand names Levitra and Staxyn), and avanafil It can be dropped to 5 mg or increased to 20 mg depending on how you respond. The daily dose for regular use is mg to 5 mg.