Dr Mom
If you are going to persist in using drugs - you're asking the wrong person for advise. If I had a 10 year-old with a bad cough I would probably be giving him 4 Echinacea & Goldenseal capsules every 2 hours while he is awake. I would be putting either mullein oil & X-ceptic on his throat, chest and back every night. (At the very least I would use Vicks Vapo-rub). I would have a hot-water vaporizer going next to his bed with eucalyptus oil in it and I would make sure he was not getting any meat, dairy or processed foods in his diet to cause more mucus.