Seizures
"Started on this med with phenob at age 12 due to grandmal seizure   Seizures stopped at age 16 but I am now 70 with no seizures since. total of 58 years. Its 100 three times a day with phonobarb 30 three times a day.  Had  sore gums that rotted my teeth. Low b12 levels and low iron over time.  I take B12 monthly, folic acid 5mg every second day. Small price to pay for no seizures for 58 years."