That is a low dose of Gabapentin @
Nammu. I am taking between 900 mg and 1500 mg, but I take it only secondarily for sleep and primarily for the amelioration of EPS. Gabapentin improves sleep architecture and deep sleep in insomniacs. I am glad it allowed you to reduce Ambien to recommended dosage levels. Ambien did nothing at all for me, but I did not try dosages above recommended. Lunesta, Sonata... same thing. This whole class of meds. Did nothing.
Sleep is not easy, is it?