https://doi.org/10.1351/goldbook.15240
Liquid preparation of high sugar concentration with or without medicinal and additional flavoring substances.
Notes:
- Syrup is a highly concentrated solution of sugar. Other polyols, such as glycerol or sorbitol, may be present to retard crystallization of sucrose or to increase the solubility of added ingredients.
- When the syrup contains a medicinal substance, it is termed "medicated syrup"; and the syrup is diluted since USP syrup is close to a saturated solution. Although syrup tends (due to its very high [approximately \(\pu{85\%}\)] sucrose content) to resist mold or bacterial contamination, syrup may contain antimicrobial agents to prevent bacterial and mold growth.
- It is often required to add a cosolvent or water to the medicated syrup in order to dissolve the drug.