Glucophage vs Metformin: are they the same?
Glucophage is a commercial brand whose active ingredient is exactly Metformin. 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 — Glucophage contains Metformin as its active ingredient. Talking about "Glucophage" in clinical terms is the same as talking about Metformin at the dose strengths 500mg, 850mg, 1000mg. The differences from the authorised generic are brand, manufacturer (Merck Serono), excipients, tablet appearance and price — not the active molecule itself.
When Glucophage is used
本薬は成人の2型糖尿病に対する第一選択経口治療として、単剤またはインスリンを含む他の糖尿病薬との併用で適応となります。一部の市場では10歳以上の小児・青少年でも使用されます。専門医の管理下で多嚢胞性卵巣症候群および前糖尿病に対する適応外または適応拡大としての使用も行われています。国際ガイドラインによれば、禁忌がない限り、ほとんどの成人2型糖尿病患者で診断時にメトホルミンの開始を考慮すべきとされています。
Mechanisms compared
Because they share the same active ingredient, the mechanism is identical: メトホルミンはミトコンドリア複合体Iの阻害を介して肝臓のブドウ糖産生を抑制し、細胞内AMP/ATP比を上昇させてAMP活性化プロテインキナーゼを活性化します。二次的作用として末梢のインスリン感受性の緩やかな改善、ならびに腸内細菌叢および胆汁酸シグナル伝達の変化が認められます。インスリン分泌を刺激しないため、本質的な低血糖リスクは低くなります。体重への影響は通常中立的か、わずかに有利な傾向があります。
Brand or generic — which to choose?
For most patients, authorised generics of Metformin are clinically equivalent substitutes for Glucophage 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 Glucophage the same as Metformin? ▾
Clinically yes — Glucophage is the brand and Metformin is its active ingredient. At equivalent doses (500mg, 850mg, 1000mg) they produce the same effect. The difference is brand, manufacturer (Merck Serono) and price.
Is generic Metformin as effective as Glucophage? ▾
Yes. Authorised generics of Metformin must demonstrate bioequivalence to the brand. The active substance is the same; average effect is the same. Price is usually substantially lower.
Why does Glucophage cost more than generic Metformin? ▾
The price difference reflects originator development costs, brand recognition and competition among generic manufacturers. The molecule is identical; the cost is not.
本ウェブサイトの情報は参考および教育目的のみで提供されます。資格を有する医療従事者への相談に代わるものではありません。