We must also be mindful of the Kashrus status of medicines, especially liquids. Many are sweetened with glycerin, treif flavors to make it desirable. That is a major problem especially if it is not life threatening issues. There is not blanket “heter” that if it is medicine it is OK
1- Sometimes there is another brand or non brand which accomplishes the same which is not problematic. The one is absolutely obligated to use the better one.
2- Sometimes it is absolutely necessary and we need to take away the pleasurable taste.
Ask before swallowing!!