相互作用
Metformin + Vitamin B12
重症度: 中等度
Metformin and Vitamin B12: moderate interaction.
最終更新日
医療従事者向け・参照専用。このページは簡潔な要約であり、医学的助言ではなく、公式の添付文書や臨床判断に代わるものではありません。処方・調剤の前に必ず確認してください。
このページの臨床コンテンツは英語でのみ提供されています。
概要
Long-term metformin therapy is associated with lower serum vitamin B12 levels and occasionally clinical deficiency, including anemia or neuropathy. The risk rises with higher doses, longer duration and other risk factors such as older age or poor intake.
この相互作用をわかりやすく説明すると
Metformin and Vitamin B12 can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Metformin belongs to Endocrine; Vitamin B12 belongs to Gastrointestinal Tract.
なぜ起こるのか
Metformin is thought to impair calcium-dependent ileal absorption of the B12-intrinsic factor complex, though the mechanism is not fully established.
対処法
Measure vitamin B12 periodically in patients on long-term metformin, especially those with anemia or neuropathy. Replace B12 if deficient; metformin can usually be continued.
薬剤師に尋ねること
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+会員向け
ページ全体を見る
アカウントを作成してPro+トライアルを始めると、MetforminとVitamin B12の臨床対応の詳細なアドバイス、追加の注記、エビデンスの詳細、処方全体を対象とした相互作用チェッカーを利用できます。
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
WebでPro+を14日間無料でお試し。カード登録不要。
Vitamin B12のその他の相互作用
Metforminのその他の相互作用
よくある質問
Can I take Metformin with Vitamin B12?
MediHelp rates the interaction as moderate. Metformin and Vitamin B12 can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Long-term metformin therapy is associated with lower serum vitamin B12 levels and occasionally clinical deficiency, including anemia or neuropathy. The risk rises with higher doses, longer duration and other risk factors such as older age or poor intake.
How serious is the interaction between Metformin and Vitamin B12?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Measure vitamin B12 periodically in patients on long-term metformin, especially those with anemia or neuropathy. Replace B12 if deficient; metformin can usually be continued.
What other medicines interact with Vitamin B12?
MediHelp also lists interactions of Vitamin B12 with, for example, Chloramphenicol, Dichlorphenamide, Neomycin po. The full list is on the Vitamin B12 page.
完全なモノグラフ、用量、相互作用チェッカーはMediHelpアプリで
MediHelpアプリで、完全なリファレンスを開き、複数薬剤の相互作用をチェックし、用量ツールを利用できます。
