This thing works wonders. My son suffered from creche related colds and flus too often for my liking. Kiddie boost, due to it being natural, takes some time before taking effect, but once it starts working, it works!! My son's recovery time when he does get sick is so much shorter, literally 3 days max. These drops keep his immune system strong. The drops are easy to use, just a few drops in his juice up to 3 times a day.