Hi, Thanks for using HCM In my opinion gabapentin can be helpfull in sciatica as it first line drug to treat neuropathic pains caused by damage or disease that affects the somatosensory system. Human nervous system employs a common mechanisms for different functions, for example ion channels for impulse generation and neurotransmitters for cell-to-cell signaling. Gabapentin provides significant pain relief in about a third of people who take it for chronic neuropathic pain. Gabapentin is know to cause such side effects but you will be off pain very soon.