Abstract: There is provided an apparatus to improve control of blood sugars in diabetics. The apparatus comprises an infusion means and a control means which controls the infusion rate of one or more diabetics control liquids. The control means comprises a basal rate means to control infusion of the liquid according to an assessed basal metabolic requirement and a non-basal rate means to control infusion of the liquid at one or more levels of metabolic activity. The control means is preferably adapted to receive patient data to vary the infusion of the liquid accordingly.