T.S.
I've heard vicks on the feet- then cover with socks so it doesn't get all over-works well. I've never tried it, but I hear it works.
Also, we used children's tylonol cough for my 2 year old earlier this year..I think that's what it was...it did have a dosage indication for 2 year olds, so they can take it. What we did, was waited until bedtime and gave it to him, so he coughed less while sleeping...so he could get sleep and so could we. Then we didn't give him any in the day, so that he could work out what ever was causing the cough.