Avanafil vs Levonorgestrel: side-by-side comparison
Avanafil (Phosphodiesterase type 5 (PDE5) inhibitor) and Levonorgestrel (Synthetic progestin (emergency contraception)) 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 | Avanafil | Levonorgestrel |
|---|---|---|
| Therapeutic class | Phosphodiesterase type 5 (PDE5) inhibitor | Synthetic progestin (emergency contraception) |
| CAS | 330784-47-9 | 797-63-7 |
| ATC | G04BE10 | G03AC03 |
| Molecular weight | 483.95 g/mol | 312.5 g/mol |
| Brands with this active ingredient | 1 | 1 |
What they share
Avanafil and Levonorgestrel 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
Avanafil acts by a different mechanism than Levonorgestrel, 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
Avanafil: L'avanafil inhibe sélectivement la phosphodiestérase de type 5 dans le corps caverneux, ce qui augmente le GMP cyclique et amplifie la vasodilatation médiée par le monoxyde d'azote en réponse à la stimulation sexuelle. Levonorgestrel: En contraception d'urgence, le lévonorgestrel agit principalement en retardant ou en inhibant l'ovulation lorsqu'il est pris avant le pic de LH.
Indications compared
Avanafil: L'avanafil est autorisé dans la dysfonction érectile chez l'homme adulte. Levonorgestrel: Le lévonorgestrel est autorisé en contraception d'urgence (dose unique de 1,5 mg), en contraception orale régulière (associé à l'éthinylestradiol ou en progestatif seul), et comme principe actif des dispositifs intra-uté…
Safety profile
Avanafil: Les effets indésirables les plus fréquents sont les céphalées, les bouffées vasomotrices, la congestion nasale et les douleurs dorsales — typiques de la classe des inhibiteurs de la PDE5, mais généralement moins fréquent… Levonorgestrel: Les effets indésirables fréquents de la contraception d'urgence comprennent nausées, céphalées, fatigue, vertiges, tension mammaire et modifications du cycle menstruel.
Questions fréquentes
Is Avanafil better than Levonorgestrel? ▾
Avanafil and Levonorgestrel are not "better or worse" — they treat different things. The sensible question is which fits your specific need.
Can Avanafil and Levonorgestrel 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 Avanafil
Products with Levonorgestrel
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.