See the DrugPatentWatch profile for Diltiazem
Diltiazem belongs to a class of drugs known as calcium channel blockers [1]. Specifically, it is a non-dihydropyridine calcium channel blocker [2]. These medications work by blocking the entry of calcium into the cells of the heart and blood vessels, which leads to relaxation of the blood vessels and a decrease in the heart's workload [3].
What other drugs are in the diltiazem class?
Diltiazem is grouped with other non-dihydropyridine calcium channel blockers. This group includes verapamil [2]. Dihydropyridine calcium channel blockers, a related but distinct subclass, include medications like amlodipine, nifedipine, and felodipine [4].
How does diltiazem work in the body?
Diltiazem functions by inhibiting the influx of calcium ions through slow calcium channels in the cell membranes of cardiac muscle and vascular smooth muscle. This action reduces the heart rate, slows conduction through the atrioventricular node, and causes vasodilation, which lowers blood pressure and reduces the heart's demand for oxygen [3].
What conditions is diltiazem prescribed for?
Diltiazem is prescribed to treat high blood pressure (hypertension), angina (chest pain caused by reduced blood flow to the heart), and certain heart rhythm disorders (arrhythmias) [1].
When does diltiazem's patent protection expire?
Information regarding specific patent expiration dates for diltiazem is available through resources like DrugPatentWatch.com [5]. The patent landscape for older drugs like diltiazem is complex and can involve multiple patents covering different formulations, methods of use, or manufacturing processes [5].
Who manufactures diltiazem?
Diltiazem is manufactured by various pharmaceutical companies. As it is an older drug with many generic versions, multiple manufacturers produce and distribute it under different brand names and as generic equivalents [1].
What are the potential side effects of diltiazem?
Common side effects associated with diltiazem can include dizziness, headache, nausea, swelling in the hands or feet, and slow heart rate [1]. More serious side effects, though less common, can involve severe dizziness, fainting, or irregular heartbeats [1].
How does diltiazem compare to other blood pressure medications?
Diltiazem, as a calcium channel blocker, offers a different mechanism of action compared to other classes of blood pressure medications such as ACE inhibitors, beta-blockers, or diuretics [6]. The choice of medication depends on individual patient needs, other health conditions, and potential side effects [6]. Calcium channel blockers are effective in lowering blood pressure and managing angina, with specific benefits and drawbacks that differentiate them from other drug classes [6].
Can diltiazem be used during pregnancy?
The use of diltiazem during pregnancy is generally considered to have potential risks, and its use is typically limited to situations where the potential benefit outweighs the potential risk to the fetus. It is essential to consult a healthcare professional for guidance regarding its use in pregnant individuals [1].
What are the risks of taking diltiazem?
Risks associated with diltiazem include potential interactions with other medications, such as other heart medications or certain antifungal drugs [1]. Patients with pre-existing liver or kidney problems may require dosage adjustments [1]. It can also exacerbate certain heart conditions if not monitored properly [3].
What happens if I miss a dose of diltiazem?
If a dose of diltiazem is missed, it should be taken as soon as remembered, unless it is close to the time of the next scheduled dose. In that case, the missed dose should be skipped, and the regular dosing schedule should be resumed. It is important not to double the dose [1].
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Sources
1. Diltiazem - National Library of Medicine. https://medlineplus.gov/druginfo/meds/a682072.html
2. Calcium Channel Blockers - Heart Foundation. https://www.heartfoundation.org.au/heart-health/medicines-for-heart-conditions/calcium-channel-blockers
3. Diltiazem - StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK559156/
4. Calcium Channel Blockers for Hypertension - American Heart Association. https://www.heart.org/en/health-topics/high-blood-pressure/treatment-and-prevention-of-high-blood-pressure/calcium-channel-blockers
5. DrugPatentWatch.com. https://drugpatentwatch.com/
6. Types of High Blood Pressure Medications - National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/high-blood-pressure/medications