Advice needed

My 6 month old is teething BADLY but refused to take any medicine eventhough it helps him. I've tried it thru a nipple, mixing it with something, putting the syringe all the way in the back of his cheek/mouth but he'll either spit it out, twist and turn his whole body, push out his tongue and gurgle so it doesn't go down. Any tips out there that have worked for you? Just trying to make him feel better.