Syrup is a thick, viscous liquid consisting primarily of a solution of sugar in water. It may also contain various aromatic or pleasantly flavored substances but is nonmedicated and generally used as a vehicle, as a flavoring agent, or for preservation. Due to high osmotic pressure, simple syrup I.P. prevents the growth of bacteria, fungi, and molds that cause decomposition of solutions. Syrups are mainly of three types, namely simple, medicated, and flavored.