question: DEAR DR. I AHVE BEEN SUFFERING FROM NASAL,SNEEZING ALLERGY FOR QUITE SOME TIME ,HAVE TAKE LONG COURSES OF MEDISCINES LIKE EBAST,AVIL.BUT THIER EFFECT HAD STARTED FADING,NOW A DAILY DOSE OF PIRITON SYRUP IS PRETTY HELLPFUL.CAN I TAKE IT IN THE LONG RUN? IS PIRITON SAFE OR PIRITON CS IS BETTER?