Caverject vs Stendra: side-by-side comparison
Caverject (Alprostadil) and Stendra (Avanafil) both belong to the Erectile Dysfunction (ED) class. They share clinical context but use different active ingredients. The choice between them depends on mechanism nuances, side-effect profile and individual response.
| Property | Caverject | Stendra |
|---|---|---|
| Active ingredient | Alprostadil | Avanafil |
| Manufacturer | Pfizer | Metuchen Pharmaceuticals |
| Class | Erectile Dysfunction (ED) | Erectile Dysfunction (ED) |
| Strengths | 10mcg, 20mcg, 40mcg | 50mg, 100mg, 200mg |
| Forms | injection | tablet |
What's the same
Caverject and Stendra both belong to the Erectile Dysfunction (ED) class and are used for partially overlapping indications. The active ingredients — Alprostadil vs Avanafil — share the same therapeutic approach, so many safety and management points carry across both.
Key differences
Meaningful differences are in active ingredient (Alprostadil vs Avanafil), strengths (10mcg, 20mcg, 40mcg vs 50mg, 100mg, 200mg), forms (injection vs tablet), and the mechanism, half-life and side-effect nuances that distinguish members of the class.
Mechanism and action
Caverject: Alprostadil binds prostaglandin E receptors on smooth muscle of the corpus cavernosum, triggering cAMP-mediated relaxation of cavernosal smooth muscle independent of the nitric oxide pathway used by PDE5 inhibitors. Stendra: Avanafil selectively inhibits phosphodiesterase type 5 (PDE5) in the corpus cavernosum, increasing cGMP and enhancing nitric-oxide-mediated vasodilation in response to sexual stimulation.
When Caverject is preferred
Caverject is approved for erectile dysfunction of vasculogenic, neurogenic, psychogenic or mixed aetiology in adult men.
When Stendra is preferred
Stendra is approved for erectile dysfunction in adult men.
Frequently asked questions
Is Caverject or Stendra better? ▾
There is no single answer. Caverject and Stendra both belong to the Erectile Dysfunction (ED) class but differ in mechanism nuances, half-life and side-effect profile. Preference depends on the patient, the prescriber and prior response to other therapies.
Can I switch from Caverject to Stendra? ▾
Switching within the Erectile Dysfunction (ED) class is done under supervision, typically using equivalent doses and a follow-up period to confirm response and tolerance. It is not a self-directed decision.
Do Caverject and Stendra have the same side effects? ▾
They share many of the Erectile Dysfunction (ED) class side effects, with differences from mechanism and dose. Each medication's prescribing information lists specifics.
More Caverject comparisons
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.