What should you do right now?
Emergency: If an erection has lasted four hours, go to the nearest emergency department or call 911 now, without waiting for it to go down.
Then follow these steps:
- Note the time it started. Staff will ask, and it guides treatment.
- If it followed a Trimix or other penile injection, follow the written plan your clinic gave you, which usually means calling before the four-hour mark. Once four hours pass, go straight to the emergency department.
- Do not take another dose of any ED medicine, and do not inject again.
- Skip home remedies. The AUA/SMSNA priapism guideline says cold compresses, exercise, oral medicines and waiting are unlikely to work and should not delay definitive treatment.
- Bring your medicines or a photo of the labels if you can grab them in seconds. Do not let that slow you down.
Why is four hours the cut-off?
Because that is where the guideline draws the line for an emergency, and damage builds steadily after it. The guideline defines priapism as an erection lasting more than four hours and calls prolonged ischemic priapism a medical emergency that can lead to scarring and erectile dysfunction. In the ischemic type, blood is trapped and fresh, oxygen-rich blood cannot flow in, so the erectile tissue starts to starve.
| Duration | What the guideline describes |
|---|---|
| Over 4 hours | Defined as priapism; ischemic priapism is an emergency |
| About 6 hours | Swelling and early damage of the smooth muscle can begin |
| 12 to 24 hours | Tissue death and scarring can begin |
| 24 to 48 hours | In one study, more than half of men had permanent ED |
| Over 36 hours | Recovery of erectile function is unlikely |
Memorial Sloan Kettering’s patient guide puts it bluntly: treat an erection of four hours with the same urgency as a heart attack.
What should you tell the emergency staff?
Everything that explains why it happened. The guideline asks clinicians to start with a full medical, sexual and surgical history, and you can speed that up by having the answers ready:
- When it started, as exactly as you can
- What you took: ED pills, Trimix or another injection, Olympus Male, and the dose and time of each
- Other medicines and drugs, including antidepressants, sleep aids, blood thinners, alcohol and recreational drugs
- Blood conditions such as sickle cell disease or trait, leukemia or multiple myeloma, which the alprostadil label lists as raising priapism risk
- Any earlier episodes
There is no need for embarrassment. Emergency teams see this, and clear information gets you treated faster.
What will the emergency team do?
They will first confirm the type, usually with a blood sample from the penis, then act quickly. The guideline’s first-line treatment for ischemic priapism is drawing out the trapped blood, sometimes with a saline rinse, together with injections of phenylephrine into the penis. If that fails, a urologist may need to perform a surgical shunt procedure to restore blood flow. Our page on priapism reversal with phenylephrine explains the medicine.
The guideline suggests numbing the penis with a local anesthetic block first, and asks clinicians to monitor your blood pressure and heart rate while phenylephrine is given.
Can it happen with pills, or only injections?
Both, but injections carry more risk. The tadalafil label describes rare reports of erections over four hours with ED pills, and asks men to seek emergency treatment if one happens. Injections act directly on the erectile tissue: in studies of alprostadil injection, 4% of men had a prolonged erection of four to six hours and 0.4% had one lasting longer than six hours. That is why careful dose testing matters, as our answer on how long a Trimix erection lasts explains.
How Ultimate Male follows up after an episode
Once you are home and treated, let us know. At our San Gabriel and Downey clinics, your provider reviews what happened, then lowers the dose, changes the medicine or adds a written plan with an earlier call point, so it does not happen again. Every patient who starts Trimix injections leaves with that plan before the first home dose.
For routine questions about your ED plan, not emergencies, see ED medications at Ultimate Male or call 626-319-5261 during clinic hours.
