About isosorbide dinitrate
Nitrate vasodilator
Used for
- Prevention of angina (heart-related chest pain)
- Treatment of heart failure in some settings
Usual adult dose
Modified-release doses vary by product and indication; follow the prescribed schedule. Immediate-release dosing differs.
Common side effects
- Headache
- Dizziness or light-headedness
- Flushing
- Low blood pressure
Important warnings
- Can cause fainting, especially when standing
- Do not combine with sildenafil, tadalafil, or similar medicines
- Avoid alcohol if it worsens dizziness or low blood pressure
- Do not stop regular treatment suddenly without medical guidance
Pregnancy
Use only when clearly needed; evidence in pregnancy is limited.
Breastfeeding
It is unknown whether isosorbide dinitrate passes into breast milk; use requires clinical assessment.
Interactions
- Sildenafil, tadalafil, and similar medicines can cause dangerous low blood pressure
- Other blood-pressure-lowering medicines may increase dizziness or fainting
- Alcohol may worsen low blood pressure
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 It may be incomplete or out of date.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.