My husband has a hiatial hernia - it causes gas and belches - and anxiety he has been taking adivan for the last 5 or 6 years - we recently moved and his new clinic Dr will not give him this medication - it eases his anxiety - allows him to eat and not belch and sleep - he is 90 years old - why do the perceive this drug to be not the answer for his problem - it has worked for a long time