Other Drug Interactions: No pharmacokinetic interactions were observed between vardenafil and the following drugs: glyburide, warfarin, digoxin, Maalox, and ranitidine. General: In humans, vardenafil alone in doses up to 20 mg does not prolong the bleeding time. Vardenafil may cause side effects. If you need a higher or lower dose, your doctor may prescribe the regular tablets instead. If you have certain health conditions or are taking certain medications, your doctor may tell you to take vardenafil less often. One possibly serious, but rare, side effect with vardenafil is heart attack.Levitra is a prescription medicine taken by mouth for the treatment of erectile dysfunction (ED) in men. ED is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. A man who has trouble getting or keeping an erection should see his doctor for help if the condition . Vardenafil is the generic name of the drugs Levitra and Staxyn. It’s used to treat erectile dysfunction. If you’re currently dealing with ED, you can speak with a doctor to see if vardenafil. In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis to help a man get and keep an test1.ru drug does not protect against sexually transmitted.