About isosorbide mononitrate
Long-acting nitrate antianginal
Used for
- Prevention of angina (chest pain) from coronary artery disease
Usual adult dose
Extended-release: usually 30–60 mg once daily; dose may be increased as prescribed.
Common side effects
- Headache
- Dizziness or light-headedness
- Flushing
- Low blood pressure
Important warnings
- Not for treating sudden angina attacks.
- Can cause fainting, especially when standing or with alcohol.
- Do not combine with sildenafil, tadalafil, vardenafil, or riociguat.
- Do not stop regularly used treatment abruptly without medical guidance.
Pregnancy
Use only if clearly needed; pregnancy safety information is limited.
Breastfeeding
Information is limited; use requires consideration of potential risks and benefits.
Interactions
- Sildenafil, tadalafil, vardenafil, or riociguat can cause dangerous blood-pressure drops.
- Other nitrates or nitric oxide donors increase low-blood-pressure effects.
- Blood-pressure medicines and alcohol may increase dizziness or fainting.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.