http://www.medications.com/effect/view/28765 GREAT DRUG. HAVE TAKEN FOR 2 YEARS WITH SUPER RESULTS FOR MY SINUS PROBLEMS WITH NO SIDE EFFECTS. I DISCOVERED THIS R/X FROM TAKING MUSCINEX WHICH HAS SAME CONTENT. NOW MUSCINEX HAS THE ENTIRE MARKET IN EXPENSIVE OVER THE COUNTER SALES. VERY SUSPICIOUS