Famotidine vs Sildenafil Citrate: side-by-side comparison
Famotidine (H2-receptor antagonist) and Sildenafil Citrate (PDE5 inhibitor) 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 | Famotidine | Sildenafil Citrate |
|---|---|---|
| Therapeutic class | H2-receptor antagonist | PDE5 inhibitor |
| CAS | 76824-35-6 | 171599-83-0 |
| ATC | A02BA03 | G04BE03 |
| Molecular weight | 337.45 g/mol | 666.7 g/mol |
| Brands with this active ingredient | 1 | 10 |
What they share
Famotidine and Sildenafil Citrate 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
Famotidine acts by a different mechanism than Sildenafil Citrate, 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
Famotidine: La famotidine bloque de façon réversible et compétitive les récepteurs H2 de l'histamine des cellules pariétales gastriques, réduisant la sécrétion acide basale comme stimulée. 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.
Indications compared
Famotidine: La famotidine est autorisée chez l'adulte et l'enfant dans le traitement de courte durée de l'ulcère duodénal et gastrique évolutif, dans le traitement d'entretien de l'ulcère duodénal, dans le reflux gastro-œsophagien… Sildenafil Citrate: Le citrate de sildénafil est autorisé chez l'homme adulte dans le traitement de la dysfonction érectile.
Safety profile
Famotidine: La famotidine est généralement bien tolérée. Sildenafil Citrate: Les effets indésirables fréquents rapportés dans les essais cliniques comprennent céphalées, bouffées vasomotrices du visage, congestion nasale, dyspepsie et troubles visuels transitoires.
Questions fréquentes
Is Famotidine better than Sildenafil Citrate? ▾
Famotidine and Sildenafil Citrate are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Famotidine and Sildenafil Citrate 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 Famotidine
Products with Sildenafil Citrate
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.