This probably is not clinically significant. There is no anticipated pharmacokinetic interaction between gabapentin and phenytoin, sodium valproate, carbamazepine or phenobcirbitone. Alcohol may increase the severity of the side-effects of gabapentin. Hypersensitivity is a contraindication. In the USA gabapentin is only approved for use in those over the age of 12.
Older people seem to handle gabapentin similarly to younger ones.
In various countries Gabapentin is only approved for the treatment of people with seizures. There are no systematic studies that establish the safety or efficacy of gabapentin as a treatment for people with mood disorders. While such studies are in the planning stages, what is currently known about the use of gabapentin for the control of mood disorders comes from uncontrolled case reports. Gabapentin's relatively benign side-effect profile. It also appears that gabapentin has significantly more antianxiety and antiagitation potency than either carbamazepine or valproate.