A woman had some problems, so she went to her doctor...

A woman had some problems, so she went to her doctor of twenty years. They had the following conversation: Dr.: Take the red pill after breakfast with one glass of water. Woman: Ok. Dr: Take the blue pill after lunch with two glasses of water. Woman: Ok. Dr.: Take the yellow pill after dinner with three glasses of water. After giving these instructions to the woman, she asks, "Can you tell me what's wrong with me Dr.? Dr.: Yeah. You do not drink enough water.