My boys are sensitive to the medication we give to them in the nebulizer. I can't give it to them too close to bedtime because it just winds them up. They bounce all over for a while. It could be that your baby is just sensitive to the meds. My 1st & 2nd kids were good sleepers. My 3rd and youngest (now 2) is a terrible sleeper. We had to try everything, including CIO. What we concluded.... he is the strongest willed out of all three of our boys!! And when he wants something, he REALLY wants it :) Jake could easily CIO for 3 hours - the whole time we went in every 10 minutes, lay him back down, and told him night night. As it stands for right now, we lay him down, put on his radio with slow country on, (we tried classical but the piano seems to wind him up instead of wind him down!) He will most times lay down, and we can hear him talking to himself. But about 25% of the time, we have to go in, lay him back down and tell him night night every 10 minutes for sometimes an hour. He is getting better. Instead of having a CIO night every night like it started out, now its reducing a little at a time. We can usually tell what kind of night it's going to be within in the first 10 minutes :) My husband and I take turns going back in and tucking him in. Just pick one thing and keep it consistent. We actually kept track on paper of how long he cried each night before falling asleep because it was so hard to see if it was actually working. But a few minutes at a time each night and after a week or so we could tell it was working. So if it helps, keep it consistent, and keep track so you can watch the progress.
Best of luck to you!
Jen
Mom of 3 boys ages 6, 4, and 2