E.d.

Ouch.. that sounds painful..
I got to looking it up though...
And here is what i have found..

Erectile Dysfunction: Alprostadil to Treat ED

Alprostadil is a type of medicine that causes blood vessels to expand, increasing blood flow throughout the body. By increasing blood flow to the penis, alprostadil helps facilitate an erection.

Alprostadil can be given either by injection or as a suppository. When given as a suppository, the medicine is placed into the opening at the tip of the penis. When injected, a needle and syringe is used to inject the medicine in the penis.

If you receive the injection-form, alprostadil is sold under the brand names Caverject, Edex, and Prostin VR. Suppository-form of alprostadil is sold under the brand name MUSE (Medicated Urethral System for Erection).

Alprostadil should only be used in men with erectile dysfunction. If this medicine is not used properly, permanent damage to the penis can occur.
Does Injection Therapy Work?

Alprostadil delivered via the injection method causes an erection firm enough for sexual intercourse in over 80% of men with erectile dysfunction, regardless of their age or the cause of their problem. Alprostadil delivered via a suppository is not as effective as when it is delivered by penile injection; it produces an erection in approximately 30-40% of men with ED.
How Quickly Will It Work?

Alprostadil usually begins to work in about 5 to 20 minutes. Intercourse should be attempted within 10 to 30 minutes after using the medication. This will produce an erection that lasts about an hour. An erection may continue after ejaculation. It is advised to use no more than 3 times per week with at least 24 hours between each use.
Who Should Not Take Alprostadil?

This medicine is not right for everyone. Before taking alprostadil, tell your doctor:

* If you have ever had an allergic reaction to alprostadil.
* If you are allergic to any other substances such as medicine, foods, preservatives, or dyes.
* If you are taking any prescription or over-the-counter medicine including herbal and dietary supplements.
* If you have a penile implant.
* If you have a history of priapism.

Also, tell your doctor if you have any medical problems, especially:

* Abnormalities to your penis such as curvature or birth defects.
* Bleeding problems.
* Penile infection.
* Red or itchy penis.
* Conditions that cause thickened or slower blood flow such as leukemia (cancer of the blood), sickle cell disease or trait, or thrombocythemia (large number of platelets).
* Peyronie's disease

If alprostadil is not safe for you to take, your doctor can recommend other treatment options that are appropriate based on your health and medical history.
How Does the Suppository-Form of Alprostadil Work?

Called MUSE, a small pellet (about one half the size of a grain of rice) of alprostadil is placed inside the urethra (the small opening on the end of the penis) to dissolve inside the penis causing blood vessels to expand so that more blood can flow into the penis allowing for an erection to occur.

Before using the suppository-form of alprostadil, be sure that you fully understand how to administer it. Do not insert more than two doses of alprostadil within a 24-hour period and do not use any more than the doctor-recommended dose during a single usage. This could result in permanent damage to the penis.

Also, when using the suppository-form of alprostadil, use a condom if having sexual intercourse with a pregnant woman. The effects of this medicine on early pregnancy are unknown.
How Do I Insert the Suppository?

* Before inserting the pellet of medicine, urinate; the small amount of urine left in the urethra will help dissolve the suppository after it has been inserted.
* Insert the medicine into the urethral opening, the entire length of the plastic arm, and push the button to deliver the suppository into the urethra.
* To help dissolve the suppository once inside, roll your penis between your hands for 10 seconds. If you feel any stinging, continue this motion to help the stinging stop.
* Sitting, standing or walking for 10 minutes while an erection is developing helps increase the blood flow to your penis to gain a proper erection.

If you have any questions, be sure to ask your doctor or pharmacist.