Tadalafil vs Caverject: side-by-side comparison
Tadalafil (Tadalafil) and Caverject (Alprostadil) 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 | Tadalafil | Caverject |
|---|---|---|
| Active ingredient | Tadalafil | Alprostadil |
| Manufacturer | Various generics | Pfizer |
| Class | Erectile Dysfunction (ED) | Erectile Dysfunction (ED) |
| Strengths | 5mg, 10mg, 20mg | 10mcg, 20mcg, 40mcg |
| Forms | tablet | injection |
What's the same
Tadalafil and Caverject both belong to the Erectile Dysfunction (ED) class and are used for partially overlapping indications. The active ingredients — Tadalafil vs Alprostadil — share the same therapeutic approach, so many safety and management points carry across both.
Key differences
Meaningful differences are in active ingredient (Tadalafil vs Alprostadil), strengths (5mg, 10mg, 20mg vs 10mcg, 20mcg, 40mcg), forms (tablet vs injection), and the mechanism, half-life and side-effect nuances that distinguish members of the class.
Mechanism and action
Tadalafil: The mechanism is identical to original Cialis: tadalafil selectively inhibits PDE5 in penile and vascular smooth muscle, allowing cyclic GMP produced during sexual arousal to accumulate. 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.
When Tadalafil is preferred
Generic tadalafil shares the indications of the originator: erectile dysfunction in adult men, lower urinary tract symptoms associated with benign prostatic hyperplasia, and pulmonary arterial hypertension at adapted doses.
When Caverject is preferred
Caverject is approved for erectile dysfunction of vasculogenic, neurogenic, psychogenic or mixed aetiology in adult men.
Frequently asked questions
Is Tadalafil or Caverject better? ▾
There is no single answer. Tadalafil and Caverject 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 Tadalafil to Caverject? ▾
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 Tadalafil and Caverject 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.
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The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.