Watery Problem

A man goes to the doctor and tells him that he hasn't been feeling
well. The doctor examines him, leaves the room and comes back with
three different bottles of pills.

The doctor says, "Take the green pill with a big glass of water when
you get up. Take the blue pill with a big glass of water after
lunch. Then just before going to bed, take the red pill with another
big glass of water."

Startled to be put on so much medicine the man stammers, "Jeez doc,
exactly what's my problem?"

Doctor says, "You're not drinking enough water."