Why tonicity modifier is used in syrup?

Tonicity modifiers are used in syrups to adjust the osmotic pressure, ensuring that the solution is compatible with physiological conditions. This adjustment helps to enhance the stability and solubility of active ingredients, improving the overall efficacy and taste of the syrup. Additionally, tonicity modifiers can prevent irritation when the syrup is administered, making it more palatable for patients, especially in pediatric formulations.