ALPROSTADIL

The U.S. FDA approved Alprostadil in 1996 and is used to treat erectile dysfunction (ED), peripheral arterial disease (PAD), patent ductus arteriosus (PDA) in infants and also for diagnostic purposes.

It may be used to improve blood flow in patients with peripheral arterial disease (PAD), a condition in which blood flow to the extremities (usually the legs) is reduced. In newborns with certain heart conditions, such as PDA, it can open a blood vessel called the ductus arteriosus. It can also be used in diagnostic tests to assess blood flow in specific body areas, such as during penile Doppler ultrasound studies to evaluate erectile function.

Alprostadil is available as an injection and can be administered through intracavernosal injection (into the penis) by the healthcare provider on scheduled appointments. Your doctor will decide the most suitable dosage for your case according to your age and physical circumstances.

The common side effects that are experienced while you are on the treatment with Alprostadil are pain or discomfort, penile burning or tingling, urethral irritation, headache, flushing, flu-like symptoms. Report your doctor immediately if you have priapism, penile fibrosis, allergic reactions, low blood pressure, cardiovascular effects, bleeding.

Alprostadil can cause priapism, a painful and prolonged erection lasting longer than four hours. Long-term use of this medication for erectile dysfunction (ED) can lead to penile fibrosis, where the penis becomes scarred and may affect erectile function. While rare, severe allergic reactions to this medication can occur. It can cause a drop in blood pressure, potentially leading to dizziness or fainting. It may increase the risk of bleeding, particularly in individuals with bleeding disorders or those taking anticoagulant medications (blood thinners).

If priapism occurs, seek immediate medical attention, as priapism can damage the penis if not treated promptly. Seek medical help if you experience rash, itching, swelling, severe dizziness, or difficulty breathing. Use caution if you have low blood pressure or are taking medications that lower it. Individuals with underlying heart conditions should use it cautiously, as it can have cardiovascular effects. Following the prescribed dosage and administration instructions for this medication is essential, and consult with a healthcare provider if you have concerns or experience any adverse effects.

Alprostadil should be used under the supervision of a healthcare professional to determine the appropriate dose and method of administration. Patients should be monitored for priapism, or a prolonged erection, and seek immediate medical attention if it occurs. Inform the healthcare provider about any existing conditions, including bleeding disorders, heart disease, or liver problems, as dose modifications or additional precautions may be required. Caution is advised in patients with penile abnormalities or a history of priapism. When used in infants, careful monitoring is necessary, with the potential benefits weighed against the associated risks. Alprostadil should be avoided in individuals with known allergies to the medication or any of its ingredients. Alcohol should be consumed cautiously, and possible interactions with other medicines should be considered. Patients should determine how the medication affects them before driving or operating machinery. The use of Alprostadil during pregnancy or breastfeeding should be discussed with a healthcare professional. Store the medication according to the recommended storage conditions to maintain its safety and effectiveness.

Pfizer Limited, Electronic Medicines Compendium (EMC), [Revised on Apr 2021] [Accessed on 3rd Oct 2023], https://www.medicines.org.uk/emc/files/pil.1092.pdf John Hwa, Kathleen Martin, The Eicosanoids: Prostaglandins, Thromboxanes, Leukotrienes, & Related Compounds, Lange’s Basic & Clinical Pharmacology, 14th Edition, 2018, 321-338.