Which side effect is NOT associated with Tricyclic antidepressants according to the ABCDE mnemonic?

Tricyclic antidepressants (TCAs) are known to have various side effects that can be categorized using the ABCDE mnemonic: Anticholinergic effects, Blurred vision, Constipation, Drowsiness, and Euphoria or elevated mood. Each of the listed side effects—blurred vision, constipation, and drowsiness—are indeed common and frequently reported with TCA use, all of which are associated with their anticholinergic properties and sedative effects.

Hyperactivity, however, is not a typical side effect associated with tricyclic antidepressants. In fact, TCAs are more likely to cause sedation rather than increased activity levels. Patients taking TCAs often experience drowsiness due to the medication's sedative effects, which is in contrast to hyperactivity. Therefore, identifying hyperactivity as not being a side effect in this context aligns with the understanding of TCAs' pharmacological profile.