During the day I used to give my kids frozen fruits or ice cubes in those net pacifiers or at night a frozen teething ring otherwise I use baby advil, I stay away from Tylenol or ibuprofen (motrin). Luckily none of mine really needed it much if at all.
You can use both of their in lots of pain you can alternate between baby Motrin and baby Tylenol. Teething is no joke that's why they do it as babies if adults had to deal with it they couldn't there's nothing wrong with giving your baby temporary relief from something that so painful