One day in August, a thirty-three-year-old woman went to her doctor because she had a water retention problem. The family doctor advised the woman to take supplements of vitamin B-6 (also known as pyridoxine). | One day in August, a thirty-three-year-old woman went to her doctor because she had a water retention problem. The family doctor advised the woman to take supplements of vitamin B-6 (also known as pyridoxine). |