My son aged 38yrs is suffering from epileptic psychosis and is under treatment with mezapine 400mg+olinzapine 10mg+eptoin 100mg( B.D) for the last eight years after relapse of illness since 1990.He did not experience epileptic fits since eight yrs but still has disturbed thought around fifty percent. Now he has developed a new problem like bleaching in empty stomach or aftermeals.Antacid do little effect.gas comes out of mouth not throgh rectum.please advise