Oral dosage, injection in to the penis or insertion it during the idea from the urethra at the tip for the penis will be the about three means of administering prescription drugs for treatment of erectile dysfunction. In march 1998, FDA approved Viagra as the first pill to treat ED.After that vardenafil hydrochloride (Levitra) and tadalafil (Cialis) were also approved. erectile dysfunction Medical professionals are screening more oral medicines for safety and success. Viagra, Levitra, and Cialis are all different types of phosphodiesterase (PDE) inhibitors.These drugs can help stimulate blood flow and relax muscles by releasing nitric oxide when they are taken an hour before sex.In comparison to oral medicines, injections work faster to trigger erections. Depending on the patient, the doctor may recommend a dose of 25, 50 or 100 mg. The encouraged dose of 10mg for Levitra or Cialis is often amplified to 20mg if necessary. Some patients that have other medical conditions which decrease the body’s ability to use the drug, may take a lower dose of 5 mg. prostate health supplements Levitra is available in a 2.5 mg dose.These PDE should not be used more than once a day. Use of these medications with nitrate-based medicine that include nitroglycerin for heart concerns can cause sudden drop in blood pressure.Utilization of drugs such as alpha-blockers that are used to take care of prostate enlargement or big blood pressure level should certainly be reported on the medical professional to ensure that the ED prescription is modified. Usage of a PDE inhibitor and an alpha-blocker simultaneously (inside of four hrs) can cause a unexpected drop in blood pressure level. penis pump