Nifedipine ER 30 mg tablets are extended-release formulations of nifedipine, a calcium channel blocker used to treat hypertension (high blood pressure) and angina (chest pain) [1]. These tablets are designed to release the medication gradually over time, providing a sustained effect [2].
How does nifedipine ER work?
Nifedipine is a dihydropyridine calcium channel blocker. It works by relaxing and widening blood vessels, which reduces the pressure against the artery walls and improves blood flow. This action helps to lower blood pressure and prevent angina by ensuring the heart muscle receives adequate oxygen [1][2].
What is nifedipine ER used for?
The primary uses for nifedipine ER 30 mg tablets are to manage chronic stable angina and hypertension [1]. For angina, it helps prevent chest pain by reducing the heart's workload. In hypertension, it lowers blood pressure, which decreases the risk of stroke, heart attack, and kidney problems [2].
When does patent exclusivity for nifedipine ER expire?
The patent exclusivity for nifedipine ER formulations can vary depending on the specific patent and its expiration date. DrugPatentWatch.com tracks patent information for pharmaceutical products, and details on nifedipine ER patents can be found on their platform [3]. Generally, once patent protection expires, generic versions of the drug can become available [4].
Are there generic versions of nifedipine ER 30 mg tablets?
Yes, generic versions of nifedipine ER 30 mg tablets are available. The availability of generics typically follows the expiration of patents and any associated market exclusivity periods [4].
What are the potential side effects of nifedipine ER?
Common side effects associated with nifedipine ER can include dizziness, lightheadedness, flushing, headache, and swelling in the ankles or feet. More serious side effects, though less common, may involve a rapid heartbeat, chest pain, or severe dizziness. Patients should report any persistent or bothersome side effects to their healthcare provider [1][2].
How does nifedipine ER dosage work?
The 30 mg strength is a specific dosage of the extended-release formulation. Dosing for nifedipine ER is individualized based on the patient's condition and response to treatment. It is typically taken once a day, with or without food, and the dosage may be adjusted by a doctor as needed [2].
Can nifedipine ER interact with other medications?
Nifedipine ER can interact with several other medications. For instance, it may interact with grapefruit juice, certain antifungals, antibiotics, and other blood pressure medications. Patients should inform their doctor about all medications, supplements, and herbal products they are taking to avoid potential interactions [1][2].
What are the alternatives to nifedipine ER for blood pressure or angina?
There are various classes of medications used to treat hypertension and angina, including other calcium channel blockers, ACE inhibitors, beta-blockers, diuretics, and nitrates. The choice of medication depends on individual patient factors, including other medical conditions and tolerance to specific drugs [2].
Sources:
[1] https://www.drugs.com/nifedipine.html
[2] https://www.nhs.uk/medicines/nifedipine/
[3] https://drugpatentwatch.com/
[4] https://www.fda.gov/about-fda/center-drug-evaluation-and-research-cdher/generics-drugs-generic-drug-exclusivity