FAQs – Frequently Asked Questions

Alprostadil and Caverject are two of the most commonly prescribed treatments for erectile dysfunction (ED). As with any medication, you will have questions and concerns. Here we will answer some of the most asked questions about Alprostadil and Caverject so you can understand how to use them, how well they work and what are the side effects.

  1. What is Alprostadil?

Alprostadil is a synthetic version of a natural substance in the body called prostaglandin E1. It works by increasing blood flow to the penis and therefore improving erectile function. Alprostadil can be used in different ways: intracavernosal injections, intraurethral suppositories, and topical creams.

  1. What is Caverject?

Caverject is the brand name for a specific formulation of Alprostadil in injectable form. It comes as a sterile powder that is reconstituted with a diluent and then injected into the base of the penis with a small needle. Caverject injections are self-administered by the patient after proper training from a healthcare professional.

  1. How effective are Alprostadil and Caverject?

Both Alprostadil and Caverject have been proven to work for erectile dysfunction. In clinical trials, these medications have shown high success rates, and many men have had satisfactory erections for sexual intercourse. But individual results may vary, consult your doctor to find out what’s best for you.

  1. What are the side effects?

Like any medication, Alprostadil and Caverject can have side effects. Common side effects are mild pain or discomfort at the injection site, mild dizziness or aching in the penis. In rare cases of priapism, a prolonged and painful erection lasting more than 4 hours can occur. If priapism occurs seek medical attention immediately to avoid complications.

  1. How long do the effects last?

The duration of the effects of Alprostadil and Caverject varies from person to person. Generally, they last for up to 1 to 2 hours. Note an erection lasting more than 4 hours should be addressed promptly as it can cause tissue damage and other complications.


  1. Can Alprostadil and Caverject be used with other ED treatments?

Alprostadil and Caverject can be used with other ED treatments like oral medications like Viagra or Cialis. This is called combination therapy; your doctor may recommend it if single therapy doesn’t work. Always consult with your healthcare provider before combining different treatments.

  1. Are there any contraindications or precautions?

Alprostadil and Caverject should not be used by individuals with certain medical conditions like those with a history of priapism, penile fibrosis, or conditions that increase the risk of priapism like sickle cell anemia or leukemia. Also, be cautious if you are taking blood thinners or have certain cardiovascular conditions. Always consult your doctor to determine if Alprostadil or Caverject is for you.


Alprostadil and Caverject are treatment options for men with erectile dysfunction. By increasing blood flow to the penis, they can help restore erectile function and sexual satisfaction. To use them safely and effectively understand how they work, the side effects and talk to your healthcare professional about any concerns or questions. Always get personalized advice so consult a specialist to find out what’s best for you.

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