Sildenafil Citrate vs Alprostadil: side-by-side comparison
Sildenafil Citrate (PDE5 inhibitor) and Alprostadil (Prostaglandin E1 (PGE1)) belong to different therapeutic classes and are rarely substitutes for each other. The comparison is useful when a single patient is weighing both options for adjacent or overlapping needs.
| Property | Sildenafil Citrate | Alprostadil |
|---|---|---|
| Therapeutic class | PDE5 inhibitor | Prostaglandin E1 (PGE1) |
| CAS | 171599-83-0 | 745-65-3 |
| ATC | G04BE03 | G04BE01 |
| Molecular weight | 666.7 g/mol | 354.49 g/mol |
| Brands with this active ingredient | 10 | 1 |
What they share
Sildenafil Citrate and Alprostadil share the common regulatory framework for prescription active ingredients, bioequivalence standards for generics, and pharmacist oversight. Beyond that, points in common are limited.
Key differences
Sildenafil Citrate acts by a different mechanism than Alprostadil, with indications that barely overlap. Comparing the two is useful when a clinician has mentioned both in the same context or the patient wants to understand why one was prescribed instead of the other.
Mechanisms compared
Sildenafil Citrate: Le citrate de sildénafil inhibe sélectivement la phosphodiestérase de type 5 (PDE5), l'enzyme qui dégrade le guanosine monophosphate cyclique dans le corps caverneux. Alprostadil: L'alprostadil se lie aux récepteurs des prostaglandines E situés sur le muscle lisse du corps caverneux et déclenche, par la voie de l'AMP cyclique, un relâchement musculaire indépendant de la voie du monoxyde d'azote qu…
Indications compared
Sildenafil Citrate: Le citrate de sildénafil est autorisé chez l'homme adulte dans le traitement de la dysfonction érectile. Alprostadil: L'alprostadil est autorisé dans la dysfonction érectile d'origine vasculaire, neurogène, psychogène ou mixte chez l'homme adulte.
Safety profile
Sildenafil Citrate: Les effets indésirables fréquents rapportés dans les essais cliniques comprennent céphalées, bouffées vasomotrices du visage, congestion nasale, dyspepsie et troubles visuels transitoires. Alprostadil: Les effets indésirables fréquents comprennent la douleur pénienne — la plus courante avec l'injection intracaverneuse —, l'hypotension, les vertiges, une brûlure urétrale avec le bâtonnet, le priapisme (rare mais grave)…
Questions fréquentes
Is Sildenafil Citrate better than Alprostadil? ▾
Sildenafil Citrate and Alprostadil are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Sildenafil Citrate and Alprostadil be combined? ▾
Whether they can be combined depends on the indications and the interaction profile of each. If both are in a single prescription, the prescriber has weighed it; in self-medication they should never be combined.
Do they have the same side-effect profile? ▾
No — they belong to different classes and have distinct side-effect profiles. Each has its own prescribing information.
Products with Sildenafil Citrate
Products with Alprostadil
Les informations publiées sur ce site sont fournies à titre documentaire et pédagogique. Elles ne remplacent pas l'avis d'un professionnel de santé qualifié.