Synthroid vs Celexa: side-by-side comparison
Synthroid (Hormone und Empfängnisverhütung) and Celexa (Antidepressiva) 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 | Hormone und Empfängnisverhütung | Antidepressiva |
| 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 Hormone und Empfängnisverhütung while Celexa belongs to Antidepressiva. 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: Levothyroxin ersetzt das defizitäre endogene Thyroxin, das in den Geweben durch Deiodinasen in das aktive Hormon Trijodthyronin (T3) umgewandelt wird. Celexa: Citalopram hemmt selektiv den Serotonin-Reuptake-Transporter und erhöht damit die synaptische Serotoninverfügbarkeit, mit nur begrenzter Affinität zu Noradrenalin-Transportern oder anderen Rezeptoren.
When Synthroid is preferred
Synthroid ist zur Behandlung der Hypothyreose jeglicher Ursache (Hashimoto-Thyreoiditis, nach Thyreoidektomie, nach Radioiodtherapie, kongenital), bei Struma sowie zur TSH-Suppression nach differenziertem Schilddrüsenkarzinom zugelassen.
When Celexa is preferred
Celexa ist zugelassen zur Behandlung der Major Depression.
Häufig gestellte Fragen
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
Die Informationen auf dieser Website dienen ausschließlich zu Referenz- und Bildungszwecken. Sie ersetzen nicht die Beratung durch qualifiziertes medizinisches Fachpersonal.