"What are beta blockers and how do they work?
Beta blockers, also known as beta-adrenergic blocking agents, are a class of drugs that works by blocking the neurotransmitters norepinephrine and epinephrine from binding to receptors. "...
Carvedilol phosphate is a nonselective β-adrenergic blocking agent with α1-blocking activity. It is (2RS)-1-(9H-Carbazol-4-yloxy)-3-[[2-(2-methoxyphenoxy)ethyl]amino]propan-2-ol phosphate salt (1:1) hemihydrate. It is a racemic mixture with the following structure:
Carvedilol phosphate is a white to almost-white solid with a molecular weight of 513.5 (406.5 carvedilol free base) and a molecular formula of C24H26N2O4•H3PO4•½ H2O.
COREG CR is available for once-a-day administration as controlled-release oral capsules containing 10, 20, 40, or 80 mg carvedilol phosphate. COREG CR hard gelatin capsules are filled with carvedilol phosphate immediate-release and controlled-release microparticles that are drug-layered and then coated with methacrylic acid copolymers. Inactive ingredients include crospovidone, hydrogenated castor oil, hydrogenated vegetable oil, magnesium stearate, methacrylic acid copolymers, microcrystalline cellulose, and povidone.
What are the possible side effects of carvedilol (Coreg, Coreg CR)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- feeling like you might pass out;
- slow or uneven heartbeats;
- chest pain, dry cough, wheezing, chest tightness, trouble breathing;
- feeling short of breath, even with mild exertion;
- swelling, rapid weight gain;
- numbness or cold feeling in your hands and feet;
- loss of bladder...
What are the precautions when taking carvedilol phosphate extended-release (Coreg CR)?
Before taking carvedilol, tell your doctor or pharmacist if you are allergic to it; or if you have had a serious reaction to other beta blockers (e.g., propranolol); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: asthma, certain types of heart rhythm problems (sinus bradycardia, sick sinus syndrome, second- or third-degree atrioventricular block), severe heart failure.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, serious...
Last reviewed on RxList: 8/19/2011
This monograph has been modified to include the generic and brand name in many instances.
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