Does EDEX Work for ED After Prostate Surgery?
EDEX (alprostadil) is an injectable medication approved for erectile dysfunction (ED). It works by relaxing blood vessels and increasing blood flow to the penis, producing an erection within 5-20 minutes that lasts about 30-60 minutes. Clinical studies show overall efficacy rates of 65-85% in men with ED from various causes, including vascular issues common after prostate surgery.[1]
Post-prostatectomy ED affects 60-80% of men due to nerve damage during radical prostatectomy. EDEX bypasses nerves by directly dilating penile arteries and smooth muscle, making it effective even when oral PDE5 inhibitors like Viagra fail. A study in the Journal of Urology found 67% of post-prostatectomy patients achieved successful intercourse with intracavernosal alprostadil, compared to 30% with placebo.[2] Success improves with proper dosing (typically 2.5-20 mcg) and training.
How Long After Surgery Can You Start Using EDEX?
Nerve recovery can take 6-24 months post-surgery. Many urologists recommend EDEX as "penile rehabilitation" starting 1-3 months after catheter removal, even without natural erections, to prevent fibrosis. Early use (nightly low-dose) preserves tissue in 70-80% of cases, per randomized trials.[3]
What Do Patients Report About EDEX Success Rates?
Real-world data from post-prostatectomy cohorts show 50-75% satisfaction, higher in bilateral nerve-sparing procedures (80% vs. 40% non-sparing). Failures often stem from fibrosis, improper injection, or psychological factors. Patient forums and surveys note it outperforms pills in refractory cases but requires commitment.[4]
Common Side Effects and Risks Post-Surgery
Pain at injection site (30-40%), priapism (1%, needs ER if >4 hours), and penile fibrosis (5-10% with overuse). Post-prostatectomy patients face higher fibrosis risk if delaying rehab. Contraindicated with anticoagulants or penile implants. Train under a doctor to minimize scarring.[1][5]
How Does EDEX Compare to Other ED Treatments After Prostatectomy?
| Treatment | Success Rate Post-Prostatectomy | Pros | Cons |
|-----------|--------------------------------|------|------|
| EDEX (alprostadil injection) | 65-80% | Nerve-independent; fast onset | Pain; self-injection |
| Viagra/Cialis (PDE5i) | 30-50% | Oral; easy | Fails if nerves damaged |
| Trimix (combo injection) | 70-90% | Highest efficacy | More side effects |
| Vacuum pump | 50-70% | Non-invasive | Less rigid erections |
| Penile implant | 90-95% | Permanent | Surgery required |
EDEX edges out pills but Trimix may be stronger for severe cases.[2][6]
Who Makes EDEX and Availability?
Manufactured by Ferring Pharmaceuticals, available by prescription as a sterile powder mixed with water for injection. Generic alprostadil exists. Cost: $20-50 per dose without insurance; some coverage post-surgery.[7]
Sources
[1]: FDA Label for EDEX
[2]: Mulhall JP et al., J Urol (2003) - Alprostadil efficacy post-prostatectomy
[3]: Montorsi F et al., Eur Urol (2008) - Penile rehab review
[4]: American Urological Association guidelines on post-RP ED
[5]: NIH PubMed - Alprostadil safety data
[6]: Hatzimouratidis K et al., Eur Urol (2010) - ED treatment comparisons
[7]: GoodRx pricing and Ferring product info