I support this strongly.
No more cold & cough medicines will be marketed for children under 4. This is a good thing. They just don't work, and they're not as safe as you might think.
I've tried them, though, and I ought to know better. I know that in clinical trials they do no better than placebo, but it's so tempting to just try something, anything, when your baby is sick. I understand; I've been there. But it's better to not even have them around, because people assume they're safe and give too much. Or try two or three things, not realizing that some ingredients overlap and give an accidental overdose. Or toddlers get into them on their own.
So I'm glad.