Elavil vs Amitriptyline: are they the same?
Elavil is a commercial brand whose active ingredient is exactly Amitriptyline. 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 — Elavil contains Amitriptyline as its active ingredient. Talking about "Elavil" in clinical terms is the same as talking about Amitriptyline at the dose strengths 10mg, 25mg, 50mg, 75mg, 100mg. The differences from the authorised generic are brand, manufacturer (Various generics), excipients, tablet appearance and price — not the active molecule itself.
When Elavil is used
アミトリプチリンは大うつ病に承認されていますが、現代の使用は低用量の適応外使用が中心であり、神経障害性疼痛、線維筋痛症、慢性緊張型頭痛、片頭痛予防、過敏性腸症候群、夜尿症、不眠症などが含まれます。現行の疼痛ガイドラインによれば、低用量アミトリプチリンは多くの神経障害性疼痛で第一選択とされます。抑うつでは忍容性および過量投与時の安全性の観点からSSRIが第一選択として一般的に好まれます。
Mechanisms compared
Because they share the same active ingredient, the mechanism is identical: アミトリプチリンは中枢シナプスにおけるセロトニンおよびノルアドレナリンの再取り込みを阻害します。さらにH1ヒスタミン、ムスカリン性アセチルコリン、α1アドレナリン、5-HT2受容体に対し有意な拮抗作用を示し、これにより副作用(鎮静、口渇、起立性低血圧)と低用量での有用な作用(睡眠導入、下行性抑制系を介した神経障害性疼痛の調整)の双方が説明されます。疼痛に対する治療効果は数週間かけて発現し、睡眠への効果は即時的です。
Brand or generic — which to choose?
For most patients, authorised generics of Amitriptyline are clinically equivalent substitutes for Elavil 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 Elavil the same as Amitriptyline? ▾
Clinically yes — Elavil is the brand and Amitriptyline is its active ingredient. At equivalent doses (10mg, 25mg, 50mg, 75mg, 100mg) they produce the same effect. The difference is brand, manufacturer (Various generics) and price.
Is generic Amitriptyline as effective as Elavil? ▾
Yes. Authorised generics of Amitriptyline must demonstrate bioequivalence to the brand. The active substance is the same; average effect is the same. Price is usually substantially lower.
Why does Elavil cost more than generic Amitriptyline? ▾
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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