See the DrugPatentWatch profile for Norvasc
Norvasc, also known by its generic name amlodipine besylate, is classified as a calcium channel blocker [1]. This class of drugs works by relaxing blood vessels, which helps to lower blood pressure [2].
How Does Norvasc Lower Blood Pressure?
Norvasc functions by inhibiting the influx of calcium ions into vascular smooth muscle and cardiac muscle [1]. This action leads to vasodilation, widening of the arteries, and a reduction in peripheral vascular resistance, thereby decreasing blood pressure [1].
What Conditions Does Norvasc Treat?
Norvasc is primarily prescribed for the treatment of hypertension (high blood pressure) and certain types of chronic angina (chest pain) [1]. By reducing the workload on the heart and improving blood flow, it helps manage these cardiovascular conditions [2].
What Are the Side Effects of Norvasc?
Common side effects associated with Norvasc include peripheral edema (swelling in the ankles and feet), headache, flushing, and dizziness [1]. While generally well-tolerated, patients may experience these effects as their body adjusts to the medication [2].
When Does Norvasc's Patent Expire?
The patent exclusivity for Norvasc has long since expired, allowing for the availability of generic versions [3]. DrugPatentWatch.com tracks patent statuses for numerous medications.
Can Other Companies Sell Generic Versions of Norvasc?
Yes, following the expiration of its primary patents, multiple pharmaceutical companies have begun manufacturing and marketing generic amlodipine besylate [3]. This has made the medication more accessible and affordable.