What Is Edex and What Does It Treat?
Edex (alprostadil) is an injectable medication used to treat erectile dysfunction (ED) by relaxing blood vessels in the penis, allowing increased blood flow for an erection. It's a sterile powder mixed with diluent into a solution for intracavernous (into the penis) injection. It's prescription-only and not for oral use.[1]
Step-by-Step Instructions for Using Edex
Follow your doctor's exact instructions, as dosage varies (typically 1-40 mcg per injection, starting low). Use once per day max, no more than 3 times weekly with 24 hours between doses. Here's the standard process:
1. Prepare the injection site: Wash hands thoroughly. Sit or stand comfortably. Swab the sides of the penis (not top or bottom) with alcohol pad to clean the injection area.
2. Reconstitute the dose: Use pre-filled syringe system. Twist off protective caps from diluent syringe and Edex cartridge. Screw syringe onto cartridge firmly. Slowly inject all diluent into cartridge (roll gently between palms 15 seconds to mix; don't shake). Withdraw solution back into syringe. Tap to remove air bubbles; expel excess for exact dose (marked on syringe).
3. Inject: Hold penis upright at 90-degree angle. Insert needle fully at base (alternate sides: 9-10 or 2-3 o'clock positions). Push plunger slowly over 5-10 seconds. Remove needle and apply pressure with alcohol pad for 5 minutes to stop bleeding (use finger, not penis itself).
4. Post-injection: Erection should start in 5-20 minutes, lasting 30-60 minutes. Intercourse possible if erection adequate. Massage penis gently if needed to distribute. Dispose of needle/syringe in sharps container.
Store unopened kits at room temperature (68-77°F). Once mixed, use within 24 hours; refrigerate if not immediate.[1][2]
Recommended Starting Dose and Adjustments
Doctors often start at 2.5 mcg (1/2 unit marking on syringe). If insufficient, increase by 2.5-5 mcg per dose (max 40 mcg). Test doses given in office first. Response varies; track effectiveness and side effects in a log for doctor review.[1]
Common Side Effects and What to Watch For
- Injection site: Pain, swelling, bruising (affects ~40% of users initially, lessens over time).
- Penis-specific: Prolonged erection (>4 hours: priapism emergency—seek ER), fibrosis/scarring with overuse.
- Systemic: Low blood pressure, dizziness, rapid heartbeat (rare).
Stop use and call doctor for severe pain, lumps, or erection >4 hours. Risk higher with frequent use (>3/week).[1][3]
What If Something Goes Wrong?
- No erection: Dose too low; don't redose same day.
- Bleeding: Apply pressure 5+ minutes.
- Priapism: Immediate medical help—can cause permanent damage.
- Overdose signs: Prolonged painful erection.
Avoid if you have penile implants, deformities, or conditions like leukemia, sickle cell. Not for women/children.[1]
Precautions Before First Use
Get trained by doctor/pharmacist—improper technique risks infection/scar tissue. Inspect solution (clear, colorless; discard if particles/discolored). Contraindicated with anticoagulants (increases bleed risk). Inform doctor of all meds, especially blood thinners, hypertension drugs.[2]
Alternatives If Injections Aren't for You
Compare to Caverject (similar alprostadil), Trimix (custom combo), Viagra/Cialis (pills), or Muse (urethral pellet). Injections work faster (~10 min) for ~80% of ED patients unresponsive to pills.[3]
[1] Edex Prescribing Information (FDA-approved label)
[2] Medscape: Alprostadil Dosing
[3] Mayo Clinic: Alprostadil Intracavernous Injection