Many liquid medications contain sugars or sugar alcohols (e.g., sorbitol) that are used to enhance the taste. The sugars and sugar alcohols can increase osmolality, which can cause tube clogging.[1]

References:

Marilyn Schallom. How to recognize, prevent, and troubleshoot mechanical complications of enteral feeding tubes. MyAmericanNurse, Feb 2016. https://www.myamericannurse.com/recognize-prevent-troubleshoot-mechanical-complications-enteral-feeding-tubes/.

Sugar in Liquid Medications-Tuesday Tube Facts