Table 1.

Composition of study drinks.

Constituents (per 100 ml)	Unit	Nutricia preOp®	Placebo
Energy	kcal kJ	50 215	1.6 7
Protein	g	0	0.02
Carbohydrate	g	12.6	0.04
Maltodextrin	g	10	0
Sugars	g	2.1	0.04
Fat	g	0	Trace
Sodium	mg (mmol)	50 (2.2)	20 (0.9)
Potassium	mg (mmol)	122 (3.1)	Unavailable
Chloride	mg (mmol)	6 (0.2)	Unavailable
Calcium	mg (mmol)	6 (0.1)	Unavailable
Phosphorus	mg (mmol)	1 (0.0)	Unavailable
Magnesium	mg (mmol)	1 (0.0)	Unavailable
Water	g	92	80