Congestive Heart Failure Home > Carvedilol Side Effects

Low blood pressure, weight gain, and diarrhea are some common side effects reported with carvedilol. Side effects that are less common can include low blood sugar and itching. Not all side effects are serious. In fact, most are easily treated by you or a healthcare provider. However, some side effects may require medical attention, such as chest pain, difficulty swallowing, or unexplained swelling.

Carvedilol Side Effects: An Overview

As with any medicine, side effects are possible with carvedilol (Coreg®). However, not everyone who takes the medicine will experience problems. In fact, most people tolerate it quite well. If side effects do occur, they are generally minor and either require no treatment or can easily be treated by you or a healthcare provider. Serious side effects are less common.
(This article covers many, but not all, of the possible side effects with carvedilol. Your healthcare provider can discuss a more complete list of carvedilol side effects with you.)

Serious Side Effects of Carvedilol

Some carvedilol side effects should be reported immediately to your healthcare provider. These potentially serious side effects include but are not limited to:
  • Unexplained skin rash
  • Itching
  • Wheezing
  • Unexplained swelling and sudden weight gain (see Coreg and Weight Gain), or difficulty breathing, which may be signs of worsening congestive heart failure
  • Chest pain
  • Dizziness, lightheadedness, or fainting spells
  • Sweating, shaking, or extreme hunger
  • Confusion
  • An irregular heartbeat (arrhythmia)
  • Signs of an allergic reaction, including:


    • Unexplained rash
    • Hives
    • Itching
    • Unexplained swelling
    • Wheezing
    • Difficulty breathing or swallowing.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
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