You can alternate dosage of Motrin and Tylenol for more serious situations where they would need to be medicated every couple of hours, instead of the 4-6 that just Tylenol or Motrin themselves have. You alternate one then the other, every 2 hours NEVER give them at that same time! A hospital SHOULD ask what you gave them last and when so they can try the other, or a different route altogether. If the medical facility you are using does not do this, I'd consider switching mama. That's not safe.

Its for fevers, headaches and pains ASSOCIATED with the common cold. It does nothing to help with a cough.

Well...Tylenol isn't for helping coughs so that might be why "it's not working anymore". Babies run hotter than we do and 99 isn't even a fever. You, and she, would be better off to just let the 99 run its course and do what its trying to do than to just keep giving her Tylenol. Im sorry, if this sounds rude girl but for some reason we've been having a LOT of Tylenol issues around here lately and it's REALLY starting to irk me. I just don't think they NEED it EVERY time they fuss. Tylenol isnt meant to be given when our kids are making US uncomfortable, is all.