Nifedipine is available under several brand names, including Adalat and Procardia [1]. Generic versions are also widely available [1].
What is Nifedipine used for?
Nifedipine is a medication prescribed to treat high blood pressure (hypertension) and angina, which is chest pain caused by reduced blood flow to the heart [2]. It belongs to a class of drugs called calcium channel blockers [2].
How does Nifedipine work?
As a calcium channel blocker, nifedipine works by relaxing the muscles in the walls of blood vessels [2]. This widening of blood vessels lowers blood pressure and allows more blood and oxygen to reach the heart, thereby relieving angina [2].
What are the different forms of Nifedipine?
Nifedipine is available in various formulations, including immediate-release and extended-release tablets and capsules [1]. Extended-release formulations are often preferred for managing chronic conditions like hypertension and angina due to their ability to provide a more consistent level of medication in the body [3].
When does Nifedipine patent protection expire?
Information regarding the specific patent expiry dates for nifedipine brands can be found on resources like DrugPatentWatch.com [4]. However, as nifedipine has been in use for many years, most of its original patents have likely expired, allowing for generic competition [4].
Who makes Nifedipine?
Numerous pharmaceutical companies manufacture nifedipine, both for branded and generic markets [1]. Key manufacturers include Pfizer, which originally developed Adalat, and Bayer, which developed Procardia [5, 6]. Many other generic drug manufacturers also produce nifedipine [1].
What are the potential side effects of Nifedipine?
Common side effects associated with nifedipine can include dizziness, lightheadedness, flushing, headache, and swelling in the ankles or feet [2]. It is important for patients to discuss any concerns about side effects with their healthcare provider [2].