Lunesta vs Eszopiclone: are they the same?
Lunesta is a commercial brand whose active ingredient is exactly Eszopiclone. This page explains what that means in practice: where they differ (brand, manufacturer, price, available strengths), why they are clinically equivalent, and when the brand or an authorised generic is the better choice.
Are they the same?
Yes — Lunesta contains Eszopiclone as its active ingredient. Talking about "Lunesta" in clinical terms is the same as talking about Eszopiclone at the dose strengths 1mg, 2mg, 3mg. The differences from the authorised generic are brand, manufacturer (Sunovion), excipients, tablet appearance and price — not the active molecule itself.
When Lunesta is used
ルネスタは入眠困難および中途覚醒を含む不眠症の治療に成人で承認されています。国際ガイドラインによれば、臨床試験で長期使用も評価されているものの、治療期間は限定し定期的に再評価すべきとされています。慢性不眠症に対しては、利用可能であれば不眠症のための認知行動療法が第一選択として推奨されます。ルネスタは小児患者には適応されません。
Mechanisms compared
Because they share the same active ingredient, the mechanism is identical: エスゾピクロンはGABA-A受容体のベンゾジアゼピン結合部位に近い部位での正のアロステリック調節薬です。中枢神経系ニューロンの抑制性塩素チャネルコンダクタンスを増強して過分極を生じさせ、鎮静、入眠促進および総睡眠時間の延長をもたらします。終末半減期は約6時間で、短時間作用型と長時間作用型睡眠薬の中間にあり、入眠と睡眠維持の両方を支えます。
Brand or generic — which to choose?
For most patients, authorised generics of Eszopiclone are clinically equivalent substitutes for Lunesta and typically cost substantially less. The practical differences are manufacturer, excipients (rarely matters except in specific sensitivities), tablet appearance and price. The brand is preferred by some patients for personal reasons or insurance coverage; the generic is the default when cost matters.
よくある質問
Is Lunesta the same as Eszopiclone? ▾
Clinically yes — Lunesta is the brand and Eszopiclone is its active ingredient. At equivalent doses (1mg, 2mg, 3mg) they produce the same effect. The difference is brand, manufacturer (Sunovion) and price.
Is generic Eszopiclone as effective as Lunesta? ▾
Yes. Authorised generics of Eszopiclone must demonstrate bioequivalence to the brand. The active substance is the same; average effect is the same. Price is usually substantially lower.
Why does Lunesta cost more than generic Eszopiclone? ▾
The price difference reflects originator development costs, brand recognition and competition among generic manufacturers. The molecule is identical; the cost is not.
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