Antiepileptics work by altering the sensitivity of the cells in the brain. This reduces their firing off an electrical impulse when instructed to do so, incorrecdy, by the area in the brain that is triggering the fits. Antiepileptic drugs have side effects, including drowsiness and reduced concentration, but need to be used for at least two years of fit-free life. Being put on and coming off these drugs must be governed by a medical specialist because removal from the drug suddenly can actually trigger fits.