Dutasteride vs Tadalafil: side-by-side comparison
Dutasteride (Dual 5α-reductase inhibitor (type 1 and type 2)) and Tadalafil (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 | Dutasteride | Tadalafil |
|---|---|---|
| Therapeutic class | Dual 5α-reductase inhibitor (type 1 and type 2) | PDE5 inhibitor |
| CAS | 164656-23-9 | 171596-29-5 |
| ATC | G04CB02 | G04BE08 |
| Molecular weight | 528.53 g/mol | 389.4 g/mol |
| Brands with this active ingredient | 1 | 7 |
What they share
Dutasteride and Tadalafil 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
Dutasteride acts by a different mechanism than Tadalafil, 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
Dutasteride: Le dutastéride inhibe de façon irréversible les deux isoenzymes de la 5α-réductase, l'enzyme qui convertit la testostérone en dihydrotestostérone (DHT). Tadalafil: Le tadalafil inhibe sélectivement la PDE5, l'enzyme chargée de dégrader le guanosine monophosphate cyclique dans le corps caverneux et dans d'autres muscles lisses vasculaires.
Indications compared
Dutasteride: Le dutastéride est autorisé dans l'hypertrophie bénigne de la prostate symptomatique, seul ou en association à la tamsulosine (Combodart) pour un meilleur soulagement des symptômes. Tadalafil: Le tadalafil dispose de trois indications autorisées : la dysfonction érectile chez l'homme adulte, les troubles urinaires du bas appareil liés à l'hypertrophie bénigne de la prostate, et l'hypertension artérielle pulmon…
Safety profile
Dutasteride: Les effets indésirables fréquents comprennent des troubles sexuels (baisse de la libido, dysfonction érectile, troubles de l'éjaculation), une gynécomastie et une tension mammaire. Tadalafil: Les effets indésirables fréquents observés dans les essais cliniques comprennent céphalées, dyspepsie, douleurs dorsales, myalgies, congestion nasale et bouffées vasomotrices du visage.
Questions fréquentes
Is Dutasteride better than Tadalafil? ▾
Dutasteride and Tadalafil are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Dutasteride and Tadalafil 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 Dutasteride
Products with Tadalafil
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.