My 40ish year old babysitter taught me a trick
that horrified me at first, but now I'm a believer. Take a heaping teaspoon full of crushed ice or small chips and wrap it up tight in the center of a very clean baby washcloth and put a rubberband around the washcloth as tight as you can. Give it to the baby dry on the outside.
We used Motrin because it specifically targets bone, muscle and joint pain and is most effective with any tooth problem along with orajel, but if I had to choose the best of all the remedies, it would be the ice in the washcloth. It saved the day (and nights) more times than I can count.
Good luck!
C. S.
Re-reading my response, the ice should be in
a "pocket" fashioned in the center of the cloth and look a bit like a lollypop with the edges of the cloth like a ponytail on the other side of the band for the baby to hold onto. The rubberband should isolate the little round pocket of ice that is small enough for baby to chew on. As the washcloth gets wet, the ice can move around a bit. The first time this is offered, it might be clumsey, but I bet the baby goes for it the second time!