About 20 percent of all babies suffer from colic.
A 2009 study, found that colicky babies had gastrointestinal inflammation and traces of a bacterium in their guts that may have prompted it. Babies without colic had no inflammation and a greater diversity of beneficial bacteria. A 2010 study has similar results.
In response, there are an increasing number of kid-oriented supplements and foods such as baby formulas, yogurts, granola bars, and juices that contain probiotics. But, the American Academy of Pediatrics has released a clinical report concluding that probiotics and prebiotics don't yet qualify as wonder cures.
Using probiotics and prebiotics are safe, natural, and inexpensive so there is no danger in using probiotic drops in colicky babies. But, until there is more research it's not a definite cure.