Well-meaning older relatives have probably told you colic comes from not breastfeeding or if you are breastfeeding, from something you ate. The fact is, no one knows what causes colic or what particular cure will work for a given infant. Both breastfed and formula fed infants can have colic although it is more common in formula fed babies. Doctors often prescribe gas drops for colicky infants. What works like a charm for one baby drives another crazy.
Teas are popular for curing colic.
Teas made from mint, fennel and onion are just a few supposed cures. The Germans even have a specially prepared baby tea that can be purchased for colic. These teas can be prepared at home though. The main tea ingredient, such as mint, is boiled, cooled and a bit of sugar is added. Since these are served warm, the curative effect may be merely from drinking something warm but it also may be an action of the sugar.