I have used Phenergan for DD3 - she's now 14 months. We have used it twice when she's had a severe allergic reaction. You need to get the right dose for your bubba's weight - 2ml if what I gave.

TBH I didn't know about the link to SIDS, but given the alternative if I didn't use it I would still use it. I guess you need to be happy that you've exhausted all other alternatives if you are going to be using it as an ongoing thing ITMS.