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Papaverine is a smooth muscle relaxant that is injected directly into the corpus cavernosum of the penis. It works by inhibiting phosphodiesterase and reducing intracellular calcium, which relaxes vascular smooth muscle and allows increased blood flow, producing an erection. It is typically used when oral medications have not worked or are not tolerated.

Papaverine is given as an intracavernosal injection, meaning it is injected into the side of the penis before sexual activity. A physician or trained healthcare provider will teach you the proper injection technique, dosage, and site rotation to minimize side effects.

Priapism, a prolonged and painful erection lasting more than four hours, is one of the most serious risks associated with Papaverine. If an erection lasts longer than four hours you should seek emergency medical care immediately, as untreated priapism can cause permanent penile damage.

Yes. Long-term use of Papaverine injections has been associated with the development of penile fibrosis, which is the formation of scar tissue in the erectile tissue. Regular follow-up with your prescribing physician is important to monitor for this complication.

Papaverine is often used as part of combination injection therapies such as bimix (Papaverine plus Phentolamine) or trimix (Papaverine plus Phentolamine plus Alprostadil). Combination formulations may allow lower doses of each drug and can improve effectiveness while reducing side effects.

Papaverine may not be appropriate for men with bleeding disorders, those taking anticoagulant medications, men with a history of priapism or sickle cell disease, those with significant penile anatomical abnormalities, or men who are unable or unwilling to administer self-injections correctly. A physician will assess your full history before prescribing.

Doctronic uses an AI-powered evaluation to gather your symptoms and medical history. A licensed physician then reviews your information and, if appropriate, creates a personalized treatment plan including a prescription. The entire process is designed to be convenient, confidential, and clinically rigorous.

Yes. Doctronic works exclusively with licensed physicians whose decisions are doctor-reviewed and audited for quality. The platform is HIPAA-compliant, protecting your personal and medical information. Doctronic is available to adults 18 and older in any U.S. state.