Hello, My Daughter Was Having Cold N Cough. Also Was

Hello, my daughter was having cold n cough. Also was omitting because of cough. Everything she eat, came out. We took her to doctor. He prescribed Toxim-o 5ml twice a day. But after 2 dosage only my daughter started having loose motions. I read in the same forum that it's the side effect of this medicine but do I need to continue giving this medicine or stop it? Her cold n cough has reduced a bit. Please suggest.
Thank you in advance.