Seizure Medication and liver disease

I am a 47 year old female. I recently received blood work results from a life insurance company.
GGT = 95  AST = 31,  ALT = 37, Bilirubin 0.6, Creatinine = 21.7.
Here's my question: I only have an alcoholic drink about once a month when I go to dinner with my husband.
Mainly because I cannot tolerate alcohol well. Even when I was in my twenties I'd throw up after 2-3 drinks on a night out.
From the time I was an infant I took both phenobarbitol and dilantin medications until I was 18 years old and my EEG was found to be normal. (I had two grand mal seizures by the age of 2.)
Could taking these medications have damaged my GGT liver function  -  and still affect so many years later?