Isosorbide Mononitrate 40 mg: CARDULES ISMN SR 40 An Effective Solution for Angina and Heart Conditions.
Apr 09, 2025
Cardiovascular diseases are among the leading causes of death worldwide, and effective treatment is crucial to managing symptoms and improving quality of life. One such proven solution is Isosorbide Mononitrate 40 mg, a widely prescribed medication used to prevent chest pain (angina) and support overall heart health. In this article, we’ll take a closer look at what Isosorbide Mononitrate 40 mg is, how it works, who should use it, its benefits, dosage guidelines, possible side effects, and precautions.
What is Isosorbide Mononitrate 40 mg?
Isosorbide Mononitrate 40 mg is a nitrate-class medicine used primarily for the prevention of angina pectoris, a condition marked by chest pain caused by reduced blood flow to the heart. It works by relaxing the blood vessels, allowing blood to flow more freely and reducing the workload on the heart. This medication is typically used as part of a long-term treatment plan for individuals with coronary artery disease, chronic stable angina, or other cardiovascular complications. It is not intended for the immediate relief of sudden chest pain, but rather to prevent such episodes from occurring.
Composition and Strength
Each tablet of CARDULES ISMN SR 40 contains:
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Active Ingredient: Isosorbide Mononitrate
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Strength: 40 mg per tablet
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Form: Oral tablet (available in immediate-release or extended-release formulations)
This dose is suitable for patients requiring moderate-strength nitrate therapy and is often prescribed based on the patient’s individual health profile and response to treatment.
Mechanism of Action
CARDULES ISMN SR 40 (Isosorbide mononitrate) functions by releasing nitric oxide in the smooth muscle tissue of blood vessels. This nitric oxide activates guanylate cyclase, which increases cyclic GMP levels. The result is vasodilation, or widening of the blood vessels, which:
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Reduces venous return (preload)
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Decreases myocardial oxygen demand
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Improves oxygen supply to the heart muscle
This mechanism helps prevent episodes of angina and supports overall cardiovascular health.
Key Benefits of Isosorbide Mononitrate 40 mg
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Prevents Angina Episodes
The primary benefit of Isosorbide Mononitrate 40 mg is its ability to prevent recurring chest pain in patients with heart disease. -
Improves Blood Flow
By dilating blood vessels, the medication ensures a better supply of oxygen-rich blood to the heart. -
Reduces Heart Workload
Lower oxygen demand means the heart doesn’t have to work as hard, which is especially beneficial in patients with weakened cardiac function. -
Long-Lasting Relief
The 40 mg strength offers prolonged therapeutic effects, especially in extended-release forms, reducing the frequency of daily dosing. -
Well-Tolerated
It is generally well-tolerated and suitable for long-term therapy under a doctor’s supervision.
Common Uses of Isosorbide Mononitrate 40 mg
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Prevention of Angina Pectoris
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Management of Coronary Artery Disease
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Supportive Therapy in Chronic Heart Failure (with other medications)
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Post-Heart Attack Recovery Plans (in some cases)
Dosage and Administration
The dosage may vary depending on the formulation and the patient’s condition. Typically:
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Starting dose: 20–40 mg once daily
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Maintenance dose: 40 mg to 60 mg per day (as advised by the doctor)
Extended-release tablets: Usually taken once daily in the morning
Immediate-release tablets: May be divided into two doses (e.g., morning and early afternoon)
Important: Do not crush or chew extended-release tablets. Always take the medicine exactly as prescribed.
Precautions Before Use
Before starting Isosorbide Mononitrate 40 mg, inform your healthcare provider if you:
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Have low blood pressure
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Are on phosphodiesterase inhibitors (e.g., sildenafil, tadalafil)
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Have a history of stroke or head injury
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Suffer from severe anemia
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Are pregnant or breastfeeding
Avoid alcohol during treatment, as it can increase the risk of side effects like dizziness or fainting.
Possible Side Effects
While Isosorbide Mononitrate 40 mg is generally well-tolerated, some patients may experience:
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Headache (common and often temporary)
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Dizziness or lightheadedness
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Nausea
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Flushing
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Low blood pressure
Serious side effects are rare but may include allergic reactions, severe hypotension, or rapid heartbeat. Seek medical attention if you experience chest pain that does not improve or worsens.
Isosorbide Mononitrate 40 mg vs. 50 mg
The difference between Isosorbide Mononitrate 40 mg and 50 mg lies mainly in strength. The 40 mg dose is ideal for patients needing moderate control of angina, while the 50 mg may be preferred for those requiring slightly stronger nitrate therapy. Your doctor will determine the appropriate dose based on your condition.
Drug Interactions
Avoid using Isosorbide Mononitrate 40 mg in combination with:
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Erectile dysfunction medications like sildenafil (Viagra), tadalafil, or vardenafil
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Other nitrates (unless advised)
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Certain blood pressure medications that may enhance hypotensive effects
Your doctor should be informed of all medicines you’re currently taking.
Storage and Handling
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Store in a cool, dry place away from direct sunlight
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Keep out of reach of children
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Do not use expired medicine
Why Choose Isosorbide Mononitrate 40 mg CARDULES ISMN SR 40 Tablet from Steris Healthcare?
When it comes to managing chronic angina and supporting heart health, quality, consistency, and reliability of medication are non-negotiable. That’s why CARDULES ISMN SR 40, manufactured by Steris Healthcare, stands out as a preferred choice among healthcare professionals and patients alike.
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