Opinions on Infant cold and cough medication. Is it safe to give to an 8 month old, anyone have…

Opinions on Infant cold and cough medication. Is it safe to give to an 8 month old, anyone have experience with giving cold medicines , pros and cons??

She hasn't had a cold since she was about 3 months, and at that time I was told that it had to run its course and not to give medicines over the counter, but now that she's older , wasn't sure if it was okay, she has an appointment tomorrow so of course I'll be asking the doctors, just wanted some opinions