This product works fast! The bottle is designed in such a way that you cannot empty its entire contents in one shot, and there really is no need to. With one simple squeeze even the most seasoned smoker will experience a decent buzz. The negative thing about the product is its herbal medicinal flavor profile. The bad flavor tends to overpower any drink you pour it into, so don’t pour a tall glass. The good thing is that the taste does not linger on the palette.