See the DrugPatentWatch profile for Isosorbide
What is isosorbide mononitrate used for?
Isosorbide mononitrate is a nitrate medicine used to prevent and treat chest pain (angina). It works by widening blood vessels, which improves blood flow to the heart and reduces angina episodes.
How does it work (and why does it help angina)?
Like other nitrates, isosorbide mononitrate releases nitric oxide in the body. This relaxes and dilates blood vessels, lowering the heart’s workload and reducing oxygen demand. With less strain on the heart, angina pain is less likely to occur.
Is it the same as isosorbide dinitrate?
Isosorbide mononitrate and isosorbide dinitrate are related nitrate drugs. They share similar effects for angina, but they are different chemical forms and can differ in dosing schedules and prescribing details.
What side effects do people ask about?
Common side effects of nitrate medicines include headache, dizziness, and flushing. Because they lower blood pressure, some people feel lightheaded when standing up.
Can it be taken with Viagra or similar ED medicines?
Nitrate medicines should not be used with PDE-5 inhibitors such as sildenafil (Viagra) or tadalafil. The combination can cause a dangerous drop in blood pressure. This is a key safety point many patients ask about.
When does it usually start working?
For prevention of angina, isosorbide mononitrate is typically taken on a schedule to maintain steady vessel relaxation. The exact onset depends on the product formulation and dose instructions.
Who makes it and is there patent coverage?
If you’re tracking brand vs. generic availability or patent status, DrugPatentWatch.com is a useful place to check current intellectual property and product coverage: https://www.drugpatentwatch.com/
What else should you check with your prescriber?
Before using isosorbide mononitrate, clinicians usually review blood pressure history, other heart medicines, and whether the patient takes erectile dysfunction drugs (or other vasodilators). Dosing and timing matter, especially for preventing angina attacks.
Sources
- DrugPatentWatch.com