I have already noticed a difference in her behavior! After using this for my kiddo, I bought the adult version for me! It gives my daughter a calmer demeanor, she has an easier time focusing on school, and her sleep schedule is a bit better. It is working so well, that I told my sister about it for my nephew! The bottle lasts a long time, so the price is really good. It is easy to use, just a dropper. It sort of tastes like cough meds, but even my daughter doesn't care...SHE WILLINGLY TAKES IT! That in itself says a lot to me!