Which side effect is related to psychoactive medications?

Psychoactive medications can indeed lead to a variety of side effects, with one of the notable ones being a slow heart rate, also known as bradycardia. Many medications that alter mood or mental state can impact the autonomic nervous system, affecting heart rate and overall cardiovascular function. This side effect can be a concern for individuals using these medications, particularly if they have preexisting conditions that make fluctuations in heart rate more serious.

The other options highlight effects that are generally not associated with psychoactive medications as side effects. Rapid weight loss is not typical for these drugs; instead, many can lead to weight gain. Improved sleep quality is often an intended effect of certain psychoactive medications, not a side effect, while increased cognitive function is also not a common side effect, as many psychoactive medications may actually impair cognitive function rather than enhance it.

Thus, the identification of a slow heart rate as a side effect of psychoactive medications underscores the importance of monitoring physical health when participating in treatment that involves these types of drugs.