We call it the bitter medicine now, and our daughters actually request it whenever they're feeling like they're coming down with something (sore throat, cold, etc). They didn't like it at first and resisted, and they still don't like it exactly but understand it works. My husband and I also take it if we're feeling on the edge of some illness. If we remember to take it seems like it's always worked! We dilute it in warm water with honey, a squeeze of lime and salt to counteract the super strong bitterness. Originally it was recommended by my acupuncturist when I told her about my daughter's strep that resisted all 3 antibiotics the doc had her take.