Alternatives to Caverject If You Can't Fill Your Prescription

If you've been prescribed Caverject (alprostadil injection) and can't get it filled — due to stock shortages, the brand discontinuation, or insurance issues — the good news is that there are multiple medically recognized alternatives. Some are directly equivalent to Caverject; others approach erectile dysfunction from a different angle. Here's what to discuss with your doctor.

1. Generic Alprostadil Injection (Direct Substitute)

The most straightforward alternative is generic alprostadil injection, which contains the same active ingredient as Caverject at the same strengths (10 mcg and 20 mcg). Since Pfizer discontinued the Caverject brand in July 2025, generic versions are now available from other manufacturers. Ask your pharmacist whether they carry generic alprostadil injection — it may need a new prescription written for the generic, or your pharmacist may be able to substitute automatically depending on your state's laws.

2. Edex (Another Alprostadil Injection Brand)

Edex, made by Endo Inc., is another FDA-approved brand of alprostadil intracavernosal injection. It is available in doses of 10 mcg, 20 mcg, and 40 mcg and works identically to Caverject. The main practical difference is that Edex has a different manufacturer and may be in stock at pharmacies where Caverject is not. Your prescriber would need to rewrite the prescription for Edex if Caverject is specified.

3. Trimix (Compounded Intracavernosal Injection)

Trimix is a compounded injectable medication combining alprostadil, papaverine, and phentolamine. Many urologists actually prefer it over alprostadil alone because:

It is generally considered more effective than alprostadil monotherapy

The effective dose is typically about half the volume needed for alprostadil alone, reducing both cost and post-injection pain

It is available through compounding pharmacies, which have more flexible supply chains

Trimix is not FDA-approved as a standardized product and must be obtained from a licensed compounding pharmacy. Quality and concentration can vary between compounders, so ask your urologist for a referral to a trusted source.

4. PDE5 Inhibitors (Oral Medications)

If you haven't tried oral ED medications or they were previously effective, they may still be an option. PDE5 inhibitors include:

Sildenafil (Viagra, generic) — taken 30–60 minutes before sexual activity

Tadalafil (Cialis, generic) — available in daily low-dose or as-needed form, lasts up to 36 hours

Vardenafil (Levitra, generic) — similar to sildenafil

Avanafil (Stendra) — faster onset, as little as 15 minutes

Caverject is typically used when oral medications have failed or are contraindicated. However, if your situation has changed or you've been off oral medications for a while, it may be worth revisiting this class with your prescriber.

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5. Vacuum Erection Device (VED)

A vacuum erection device (also called a penis pump) creates negative pressure around the penis, drawing blood into the corpora cavernosa and producing an erection. A constriction ring is then placed at the base to maintain the erection. VEDs are non-invasive, drug-free, and covered by Medicare and many insurance plans when medically necessary. They are often recommended for men who cannot tolerate medication side effects.

6. Penile Implant (Surgical Option)

For men with severe ED that hasn't responded to medications, a penile prosthesis (implant) is the most permanent solution. Patient satisfaction rates are high — over 90% in most studies. This is a surgical option requiring a urologist with implant expertise, but for the right patient it eliminates the need for any ongoing medication.

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Comparing the Options at a Glance

Generic alprostadil / Edex: Identical to Caverject, same injection method

Trimix: More effective for many men, lower per-dose cost, compounded

PDE5 inhibitors: Oral, convenient, widely available, generic options inexpensive

VED: Drug-free, non-invasive, covered by insurance

Penile implant: Permanent, surgical, highest satisfaction long-term

Still Trying to Find Caverject or Alprostadil?

If you'd prefer to stick with alprostadil injection and just need help finding it locally, medfinder can contact pharmacies near you to find out which ones can fill your prescription. You enter your drug name, dose, and location — medfinder calls the pharmacies and texts you the results.

For the latest shortage status, read our Caverject shortage update for 2026.