Gabapentin is originally a seizure medication... but not as effective and more sedating. It is also approved for use for the nerve pain of post herpetic neuralgia. Orthopedists use it more often for joint pain and arthritis. See www.elderconsult.com/medication. The biggest side effects are drowsiness, constipation, edema, and sedating can affect falling. The standard starting dose 300 mg 3 x a day is way too much. I start with 100 mg in the evening with someone there to watch their walking closely.