The effect of a sodium citrate preparation compared with an aluminium-magnesium hydroxide preparation on the urinary pH of normal subjects.

The effects of a sodium citrate preparation in two dosage regimens (4 g 4 times daily and 8 g 4 times daily) and of an aluminium-magnesium hydroxide suspension (15 ml 4 times daily) on the urinary pH of 19 healthy subjects were compared. The sodium citrate preparation in both dosages proved to be superior to the aluminium-magnesium hydroxide suspension in elevating the urinary pH. Urinary pH values as high as 8 were reached with the sodium citrate preparation. Blood pH, blood gases and electrolyte changes were within normal limits.