Gabapentin (Neurontin, Gralise) is a medication used to help manage certain epileptic seizures and relieve pain for some conditions, such as shingles (postherpetic neuralgia). Dizziness and drowsiness are common gabapentin side effects. Weight gain and uncoordinated movement are possible side effects.

How long does it take for gabapentin to make you sleepy?

Peak concentrations of gabapentin (immediate-release) occur within 2 to 3 hours. Although gabapentin may improve sleep problems due to nerve pain within a week, it may take up to two weeks for symptom relief from nerve pain to occur. A reduction in seizure frequency is usually apparent within a few weeks.

Does gabapentin cause tiredness?

SIDE EFFECTS: Drowsiness, dizziness, loss of coordination, tiredness, blurred/double vision, unusual eye movements, or shaking (tremor) may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.