I have a similar remedy for hiccups. It takes water and the help of a friend. Have the person with hiccups drink about 1/2 glass of water (4-6 oz.), breathing normally. While they are drinking, someone else must pull up their earlobes. Works every time. Even on babies. Just hold up their earlobes while they're drinking their bottle.
Water and the Help of a Friend
A friend showed me this trick and I have never seen it fail. If some one has hiccups give them a large glass of water, six or seven hundred mls, put you hands over their ears firmly and tell them to drink and keep drinking until you say stop. Let them drink most of the water and then take your hands away. The hiccups will disappear. I get my husband to do this for me and it works every time. Makes a good party trick too.