Synthroid vs Lunesta: side-by-side comparison
Synthroid (Hormone und Empfängnisverhütung) and Lunesta (Schlafmittel und Hypnotika) 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 | Lunesta |
|---|---|---|
| Active ingredient | Levothyroxine | Eszopiclone |
| Manufacturer | AbbVie | Sunovion |
| Class | Hormone und Empfängnisverhütung | Schlafmittel und Hypnotika |
| Strengths | 25mcg, 50mcg, 75mcg, 100mcg, 150mcg | 1mg, 2mg, 3mg |
| Forms | tablet | tablet |
What's the same
Synthroid and Lunesta 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 Lunesta belongs to Schlafmittel und Hypnotika. 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. Lunesta: Eszopiclon ist ein positiver allosterischer Modulator des GABA-A-Rezeptors an einer Bindungsstelle nahe der Benzodiazepin-Bindungsstelle.
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 Lunesta is preferred
Lunesta ist bei Erwachsenen zur Behandlung von Schlafstörungen einschließlich Ein- und Durchschlafstörungen zugelassen.
Häufig gestellte Fragen
Is Synthroid or Lunesta better? ▾
Synthroid and Lunesta 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 Lunesta? ▾
Switching between Synthroid and Lunesta 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 Lunesta 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
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