Are alprostadil and sildenafil (viagra) effective in the same types of erectile impotence?

Yes. They are different categories of drug. Alprostadil is either injected in penis or inserted in urethra and sildenafil is a pill. They both cause increased penile blood flow.
Yes. These medications are effective to treat erectile dysfunction. They are simply different types of medications but both can be used to treat erectile dysfunction.

Related Questions

Are alprostadil and sildenafil (viagra) effective in the treatment of all types of erectile impotence?

No. Nothing works all the time. That is certainly true of these agents. For instance, if the blood vessels that are responsible for creating an erection are damaged then these medications probably won't work. Read more...
No. These medications do not necessarily help all men with erectile dysfunction. These medications help draw more blood into the erectile chambers of the penis. If men's arterial inflow is too compromised, or their venous circulation permits leakage of blood from the chambers, these medications might not work as well. Men also must have intact pelvic nerves for medications like viagra (sildenafil) to work. Read more...

Are alprostadil and sildenafil effective in all types of erectile impotence?

No. These medications can improve blood flow and/or retention in the penis to help erection. If impotence is related to nerve damage or lack of testosterone they would not be likely to help. Read more...
Not w/Nitrates. In addition to what dr. Weeks noted, sildenafil and other oral pde-5 inhibitors can't be used w/nitrates lest your blood pressure drops & your cardiovascular system collapses predisposing you to sudden death. Nitrates are commonly used for heart disease in those complaining of chest pain or angina. Beware of otc supplements contaminated w/pde5 inhibitors but labeled as natural & organic. Read more...

What would happen if you take viagra (sildenafil) and don't have erectile dysfunction?

Maybe a better erect. A recent study examined men who did not have ED and gave half a placebo pill and the others viagra (sildenafil). The men who took the viagra (sildenafil) reported several sexual benefits including a stronger erection, quicker bounce-back time, enhanced sexual pleasure... The primary concern is side effects- which tend to be mild including headache, nasal congestion, and the cost. Read more...

Does linseed helpful for curing erectile dysfunction? Viagra (sildenafil) also don't help me?

Usually not. More concerning is ed in a 23 yo man. Ed is more common in older men with medical conditions such as diabetes, vascular diseases, high blood pressure, etc, so when young 23 yo men complain of ed they should be examined and tested to rule out these conditions. Bottom line - see your doctor. Read more...