Nitrates are medications that widen blood vessels, improving blood flow. This effect is crucial for treating chest pain (angina) associated with coronary artery disease.
Several types of nitrates exist, each with slightly different delivery methods and durations of action:
- Nitroglycerin: Available as sublingual tablets (under the tongue), sprays, ointments, and patches. Acts quickly, often providing relief within minutes. Effects typically last for 30-60 minutes. Isosorbide dinitrate: Comes in tablets and extended-release capsules. Provides longer-lasting relief than nitroglycerin, often used for preventing angina attacks. Isosorbide mononitrate: Similar to isosorbide dinitrate but with a longer duration of action, usually taken once or twice daily.
Understanding the potential side effects is important. Common ones include:
- Headache Dizziness Low blood pressure Flushing
Serious side effects are rare but can occur. Seek immediate medical attention if you experience:
Severe headache Fainting Rapid heart rate Shortness of breath
Interactions with other medications are a significant concern. Nitrates, specifically, interact negatively with certain medications, most notably PDE5 inhibitors like Cialis. This combination can cause a dangerous drop in blood pressure. Always inform your doctor of all medications you are taking, including over-the-counter drugs and supplements.
Dosage and frequency depend on individual needs and the specific nitrate prescribed. Follow your doctor’s instructions precisely. Never increase the dose without consulting your healthcare provider. Proper storage is also key; keep nitrates away from heat and moisture.
