Oral dosage, injection into the penis or insertion it with the suggestion of the urethra with the tip of the penis would be the 3 tactics of administering medication for treatment method of erectile dysfunction. Viagra was the first pill to treat ED and it was approved by FDA in March 1998. Vardenafil hydrochloride (Levitra) and tadalafil (Cialis) have also been approved. erectile dysfunction definition Some extra medicines are now being tested for basic safety and success. The types of phosphodiesterase (PDE) inhibitors include Viagra, Levitra, and Cialis.These drugs can help stimulate blood flow and relax muscles by releasing nitric oxide when they are taken an hour before sex.However, injections trigger automatic erections quicker than oral medicines. Depending on the patient, the doctor may recommend a dose of 25, 50 or 100 mg. If the medical doctor feels which the preferred dose of 10 mg for Levitra or Cialis is inadequate then, it may possibly be elevated to 20mg. The doctors might also decrease the dose to 5 mg for people who take other medicines or have disorders that will minimize the body’s potential to utilize the drug. prostate supplement Levitra is obtainable inside a lower dose of 2.5 mg.The use of these drugs is not recommended for much more than once per day. A sudden drop in blood pressure can result for patients who get these medicines with other nitrate-based prescription drugs which include nitroglycerin for heart situations.Your physician really should know and modify your ED prescription if you’re using any alpha blockers, which are used to take care of prostate enlargement or significant blood pressure level. This is because, taking a PDE inhibitor and an alpha-blocker at the same time (within 4 hours) can cause a sudden drop in blood pressure level. penis pumps