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Coreg CR Side Effects

Serious Side Effects

Some Coreg CR side effects should be reported immediately to your healthcare provider. These side effects include, but are not limited to:
  • Unexplained swelling and sudden weight gain (see Coreg and Weight Gain) or difficulty breathing, which may be signs of worsening congestive heart failure
  • Unexplained skin rash
  • Itching
  • Wheezing
  • Difficulty swallowing
  • 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, or difficulty breathing or swallowing.

Rare Side Effects

Rare Coreg CR side effects occur in less than 3 percent of people taking the drug (based on studies of the short-acting version, Coreg). Given how uncommon they are, it can be difficult to tell whether these side effects are actually caused by the medication itself or something else.
Some of these rare but possible side effects include, but are not limited to:
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Coreg CR Medication Information

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