Injections for erections, such as alprostadil (Caverject, Edex), are a treatment option for men with erectile dysfunction (ED) who do not respond to oral medications. These injections involve administering medication directly into the penile tissue using a fine needle. Alprostadil works by relaxing smooth muscle tissue and dilating blood vessels in the penis, which enhances blood flow and results in an erection. This method typically produces an erection within 5 to 20 minutes that can last up to an hour. While effective, penile injections can cause side effects such as pain at the injection site, priapism (prolonged erections), and fibrosis (scar tissue formation) with long-term use. Proper training on injection technique and dosage is essential to minimize risks and ensure the best outcomes. *The information provided on the site is for educational purposes only, and does not substitute for professional medical advice. Consult a medical professional or healthcare provider if you are seeking medical advice, diagnoses, or treatment.