Some Coreg side effects should be reported immediately to your healthcare provider. These side effects include but are not limited to:
Unexplained skin rash
Itching
Wheezing
Difficulty breathing or swallowing
Unexplained swelling or sudden weight gain
Chest pain
Dizziness, lightheadedness, or fainting spells
Sweating, shaking, or extreme hunger
Confusion
Irregular heartbeat.
Rare Coreg Side Effects
Rare Coreg side effects occur in less than 3 percent of people taking the drug. Given how uncommon they are, it can be difficult to tell whether these side effects are actually caused by the medication or by something else.
Some of these rare but possible side effects include but are not limited to: