Synthroid vs Celexa: side-by-side comparison
Synthroid (Hormones et contraception) and Celexa (Antidépresseurs) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Synthroid | Celexa |
|---|---|---|
| Active ingredient | Levothyroxine | Citalopram |
| Manufacturer | AbbVie | Forest Laboratories / AbbVie |
| Class | Hormones et contraception | Antidépresseurs |
| Strengths | 25mcg, 50mcg, 75mcg, 100mcg, 150mcg | 10mg, 20mg, 40mg |
| Forms | tablet | tablet |
What's the same
Synthroid and Celexa 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
Synthroid belongs to Hormones et contraception while Celexa belongs to Antidépresseurs. 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
Synthroid: La lévothyroxine remplace la thyroxine endogène déficitaire, convertie dans les tissus en hormone active, la triiodothyronine (T3), par les enzymes désiodases. Celexa: Le citalopram inhibe sélectivement le transporteur de recapture de la sérotonine, augmentant sa disponibilité synaptique avec une affinité limitée pour les transporteurs de la noradrénaline ou les autres récepteurs.
When Synthroid is preferred
Synthroid est autorisé dans l'hypothyroïdie de toute cause (thyroïdite de Hashimoto, post-thyroïdectomie, post-iode radioactif, congénitale), dans le goitre et dans la freination de la TSH après cancer thyroïdien différencié.
When Celexa is preferred
Celexa est autorisé dans la dépression caractérisée.
Questions fréquentes
Is Synthroid or Celexa better? ▾
Synthroid and Celexa 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 Synthroid to Celexa? ▾
Switching between Synthroid and Celexa 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 Synthroid and Celexa have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
More Synthroid comparisons
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.