What common side effect may occur with an increased dosage of carvedilol?

With an increased dosage of carvedilol, a common side effect that may occur is dry mouth. Carvedilol is a non-selective beta-blocker that also has alpha-blocking activity, and one of the side effects of many medications, particularly those affecting the autonomic nervous system, is xerostomia or dry mouth. This effect can result from decreased salivary gland function due to the drug's action on beta receptors.

In contrast, the other options do not typically correlate with the pharmacological profile of carvedilol at increased dosages. Increased perspiration, constant nausea, and severe headaches are not commonly reported or associated with this medication. Understanding these side effects can help in anticipating patient responses to therapy and deciding on appropriate management strategies.