What dosage of children's cold and cough medicine can you give 2 year old?

Depends: There are so many different types of cough and cold medications it is impossible without knowing which specific one you are referring to. Most of these medications are no longer recommended for young children because of their side effects. Nasal saline spray is a good starting point.

Consider "none": These used to be given out routinely as prescription meds before they became over the counter. Now we don't recommend them at all under 6 if at all. So many kids ended up in ER's with overdoses that they took a look at the benefit/risk analysis.If you just want to be doing something, it can be done, but studies show no true benefit under 6.