Coreg is an adrenergic blocking agent. The active ingredient in Coreg is carvedilol which is dispensed as oral tablets, and oral extended release tablets.
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Coreg is a β-blocker. β-blockers show an impact on the heart and blood circulation in the veins and arteries.

How to use

Take this medicine in the same way as your doctor has prescribed. Don’t increase or decrease the dosage if not recommended. Follow the instructions given on the medicine label. Coreg shows its maximum benefits when taken with food.

You may simply split open the Coreg pill and put the drug into pudding so that it is easy to swallow. Swallow instantly. Don’t chew. Take this medicine everyday at the same time. Avoid skipping any doses or stop the intake of this drug without proper discussion with your doctor. Stopping immediately may worsen your medical condition.


Coreg is used for the treatment of hypertension and heart failure. Also it is utilized after a heart attack due to which your heart doesn’t function well.

Reduction in high BP helps in the prevention of heart attacks, kidney problems and strokes. This medicine shows its impact by stopping the action of some specific natural components in the body, like epinephrine, on the blood vessels and heart This impact reduces your BP, heart rate, pressure on your heart. Carvedilol is placed under a class of medicines known as α and β blockers.

Side Effects

Get immediate medical aid if you observe any of these symptoms of an allergic response to Coreg: difficulty breathing, hives; swollen face, throat, tongue or lips.

Inform your doctor right away if you observe any severe side effect like:

  • Irregular or slow heartbeats
  • Light-headedness;
  • Rapid weight gain,
  • Swelling
  • Feeling short of breath
  • Numbness in your fingers or toes;
  • Dry cough,
  • Chest pain,
  • Wheezing,
  • Chest tightness,
  • Trouble breathing; or

Common Coreg side effects may include:

  • Weakness,
  • Weight gain.
  • Diarrhea;
  • Dry eyes;
  • Dizziness;
  • Tired feeling; or


Don’t use Coreg if you are hypersensitive to carvedilol, or if you have:

  • Bronchitis,
  • Asthma
  • Emphysema;
  • Severe liver disorder; or
  • A severe heart condition

To ensure that you can use Coreg safely, let your doctor know if you have:

  • Angina
  • Diabetes
  • Liver disorder
  • Kidney disease;
  • Pheochromocytoma
  • A thyroid disorder;
  • Blood circulation problems

Don’t drink alcohol with two hours after or before the intake of Coreg CR medicine. Also, you should avoid the intake of any medicine or some other product which may consist of alcohol. This is because alcohol may lead to the quick release of Coreg CR in the body.

Some drugs like flucanazole, cimetidine, insulin, cyclosporine, rifampin, ampitryptilin may interact with coreg. So let your doctor know if you are consuming any of these.

Pregnancy and Coreg

It is uncertain if Coreg will cause any damage to an unborn baby. Let your doctor know if you are pregnant or think of becoming pregnant during the intake of this medication. It is unknown whether carvedilol goes into maternal milk or possibly harm an infant. Don’t breast-feed during the intake of Coreg.

Drug Uses

Coreg is prescribed to treat high blood pressure, and to prevent and treat heart attacks. The active ingredient works by regulating the flow of blood.

Coreg is used to treat other medical conditions not listed in this information guide.


Coreg must always be used as directed. Do not make adjustments to the dose before speaking to a doctor. Drink a glass of water with each dose.

Do not stop using Coreg unless instructed by a doctor. Sudden cessation can lead to serious side-effects, especially if you are using Coreg to treat high blood pressure. High blood pressure often has no obvious symptoms.

Missed Dose

If you miss a dose, it may be taken when you remember. However, do not take the missed dose near the time of the next scheduled dose. In this case, ignore the missed dose. Never double-up on a dose.

Warnings and Precautions

Do not use Coreg if you are allergic to carvedilol.

Do not use Coreg if you suffer with any of the following: bronchitis, asthma, emphysema, serious heart disorder such as sick sinus syndrome, severe liver disease, slow heart rate (if you do not have a pace-maker).

Before using Coreg, tell your doctor if you suffer with any of the following: low blood pressure, diabetes, depression, congestive heart failure, thyroid disorder, kidney disease, myasthenia gravis (chronic muscle weakness and fatigue), circulatory problems, or pheochromocytoma (tumor of the adrenal gland).

It is not known if Coreg can harm an unborn fetus therefore pregnant women should not use this drug. It is not known if Coreg is passed into breast milk so women who are breast-feeding should use this drug with caution, under directions of a doctor. Women who become pregnant while using Coreg should immediately inform their doctor.

Before using Coreg, you must give your doctor full details of your medical history and other medications that you use. These include herbal medicines and vitamin supplements. Coreg can react badly with some medications.

While using Coreg you will need to have your blood pressure checked regularly to ensure that Coreg is having the desired effect.

If you are using the Coreg extended release tablets, do not drink alcohol two hours before, or two hours after, a dose. Alcohol can interfere with the delayed release mechanism.

Possible Side-effects

Call for emergency assistance if any of the following symptoms of allergy occur: difficulty in breathing, hives, or swelling of the lips, tongue, throat or face.

Contact your doctor if any of the following serious side-effects occur: lightheadedness, shortness of breath (particularly after mild exertion), slow or irregular heart rate, nausea, swelling of the feet or ankles, stomach pain, lack of appetite, clay-colored stools, dark urine, low fever, jaundice, cold hands or feet, or depression.

Less serious side-effects can include erectile dysfunction and other sexual problems, insomnia, anxiety, nervousness, or fatigue.

Contact your doctor if any uncomfortable symptoms occur, or persist.


Symptoms of overdose with Coreg can include shortness of breath, irregular heart rate, blue-colored finger nails, weakness, dizziness, fainting, or convulsions. Call for emergency help if overdose is suspected.

Storage instructions

Coreg must be kept away from children and stored in a dry, cool place away from sunlight and moisture.