About nitroglycerin
Organic nitrate vasodilator
Used for
- Prevention of angina (chest pain) in coronary artery disease
Usual adult dose
Apply one patch daily, usually for 12–14 hours, then remain patch-free for 10–12 hours.
Common side effects
- Headache
- Dizziness or light-headedness
- Low blood pressure
- Skin irritation
Important warnings
- Not for sudden angina attacks; use prescribed fast-acting medicine instead.
- Never combine with sildenafil, tadalafil, vardenafil, or riociguat.
- Remove the patch before MRI or electrical cardioversion, if directed.
- Continuous use can reduce effectiveness; a daily patch-free interval is needed.
Pregnancy
Use only when clearly needed; safety information is limited.
Breastfeeding
Information is limited; use only with clinical guidance.
Interactions
- Sildenafil, tadalafil, vardenafil, or riociguat can cause dangerous low blood pressure.
- Alcohol and other blood-pressure-lowering medicines may worsen dizziness or 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 It may be incomplete or out of date.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.