Proven hiccup remedies anyone?

my son had reflux very bad, and one of the symptoms is getting the hick ups. my Nana said to put a small pinch of sugar in his bottle with boiling water and when it cools down to room temp give it to him. it takes a couple of mins but it worked for him. unfortunately until the reflux goes he'll continue getting them. like with adults, cause i work in a pub, when some one has the hick ups we give them a shot of straight red cordial and the hick ups are gone. another thing i do is hold him to me tightly, pull up his legs and gently bounce him as i walk around the room, Good luck.