What would be a common symptom of CNS depression caused by anti-seizure drugs?

Drowsiness is a well-known symptom of central nervous system (CNS) depression, which can occur as a side effect of many anti-seizure medications. These drugs often work by enhancing inhibitory neurotransmission or reducing excitatory neurotransmission in the brain, leading to a calming effect on the CNS. This sedative effect can manifest as drowsiness, fatigue, or a general decrease in alertness.

Since anti-seizure medications aim to stabilize neuronal activity to prevent seizures, they can also inadvertently suppress normal neural activity, contributing to feelings of lethargy or excessive sleepiness. This symptom is somatic and affects a person's physical and cognitive state, making it distinct from other symptoms like anxiety or agitation, which are associated with heightened CNS activity or distress.