Diflucan vs Plan B: side-by-side comparison
Diflucan (Antifongiques) and Plan B (Hormones et contraception) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Diflucan | Plan B |
|---|---|---|
| Active ingredient | Fluconazole | Levonorgestrel |
| Manufacturer | Pfizer | Foundation Consumer Healthcare |
| Class | Antifongiques | Hormones et contraception |
| Strengths | 50mg, 100mg, 150mg, 200mg | 1.5mg |
| Forms | capsule, oral suspension | tablet |
What's the same
Diflucan and Plan B are used in very different patients, and the points in common are limited. The main shared element is that both meet regulatory standards for efficacy and safety and benefit from pharmacist oversight.
Key differences
Diflucan belongs to Antifongiques while Plan B belongs to Hormones et contraception. Indications, mechanisms and target populations differ. The comparison is most useful when a clinician has mentioned both medications and the patient wants to understand where each fits.
Mechanism and action
Diflucan: Le fluconazole est un antifongique triazolé qui inhibe la lanostérol 14-alpha-déméthylase, enzyme dépendante du cytochrome P450, bloquant la synthèse de l'ergostérol à partir du lanostérol. Plan B: Le mécanisme principal de Plan B est le retard ou le blocage de l'ovulation lorsqu'il est pris avant le pic de LH.
When Diflucan is preferred
Diflucan est autorisé chez l'adulte et l'enfant dans le traitement de la candidose vulvovaginale, des candidoses oropharyngée et œsophagienne, des candidoses urinaires, des péritonites et autres candidoses invasives dues à des espèces sensibles, dont les candidémies, ainsi que da…
When Plan B is preferred
Plan B est indiqué en contraception d'urgence après un rapport non protégé ou un échec de contraception avéré ou suspecté, chez la femme en âge de procréer.
Questions fréquentes
Is Diflucan or Plan B better? ▾
Diflucan and Plan B are not interchangeable — they treat different conditions. Asking which is "better" is meaningful only when a clinician has weighed both for the same specific clinical scenario.
Can I switch from Diflucan to Plan B? ▾
Switching between Diflucan and Plan B is rarely an appropriate decision since they belong to different classes and treat different conditions. The real question is usually whether the diagnosis calls for one medication or the other — which the prescriber resolves.
Do Diflucan and Plan B have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
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.