As some of you already know, I have been a little sick for a few days now. One of my symptoms is strong coughing, so I have been taking Robutussin. However, I cannot stand the awful taste of Robutussin, so I always drink a glass of water after taking it. There didn't seem to be anything wrong, until someone told me that I was diluting the Robutussin, by drinking water after taking it, and that it wasn't being as effective as it could be. Is this so? If so, then how much difference is there supposed to be (since I have noticed considerable improvement despite drinking water)? Any response is appreciated.