藥物交互作用
Glyceryl trinitrate pr + Sildenafil
嚴重程度: 禁忌併用
Glyceryl trinitrate pr and Sildenafil: contraindicated interaction.
最後更新
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本頁的臨床內容僅提供英文版。
摘要
Sildenafil markedly potentiates the hypotensive effect of nitrates, including rectal glyceryl trinitrate. Profound and potentially fatal hypotension, syncope or myocardial ischemia can occur.
用白話說明這項交互作用的意義
Glyceryl trinitrate pr and Sildenafil are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
為什麼會發生
Nitrates raise cGMP via nitric oxide and sildenafil blocks its breakdown by PDE5, causing exaggerated vasodilation.
處置方式
Do not combine. If a nitrate is needed after sildenafil, withhold it for at least 24 hours and give only under medical supervision.
可向藥師詢問的問題
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
Sildenafil 的其他交互作用
常見問題
Can I take Glyceryl trinitrate pr with Sildenafil?
MediHelp rates the interaction as contraindicated. Glyceryl trinitrate pr and Sildenafil are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Sildenafil markedly potentiates the hypotensive effect of nitrates, including rectal glyceryl trinitrate. Profound and potentially fatal hypotension, syncope or myocardial ischemia can occur.
How serious is the interaction between Glyceryl trinitrate pr and Sildenafil?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not combine. If a nitrate is needed after sildenafil, withhold it for at least 24 hours and give only under medical supervision.
What other medicines interact with Sildenafil?
MediHelp also lists interactions of Sildenafil with, for example, Amyl nitrite, Atazanavir, Cobicistat. The full list is on the Sildenafil page.
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