Which side effect is commonly associated with Gabapentin use?

Gabapentin is known for its potential to cause ataxia, which is characterized by loss of coordination and balance. This side effect can be significant, particularly in older adults or individuals who are sensitive to medication effects, as it may impair motor skills and increase the risk of falls. Ataxia occurs because Gabapentin affects the central nervous system, leading to alterations in conduction and neurotransmitter release, which can disrupt normal motor function.

Other options are less commonly associated with Gabapentin. While nausea and insomnia can occur in some individuals taking this medication, they are not the hallmark side effects typically highlighted in clinical practice or literature. Hypertension is not associated with Gabapentin; rather, it can occasionally cause a decrease in blood pressure. Therefore, the prominence of ataxia as a side effect makes it the correct choice in this context.