--Patient Characteristics-- Renal: Creatine no greater than 2.2 mg/dL No requirement for regular dialysis Other: Weight above or below 30% of ideal body weight No fructose intolerance No insulin-dependent diabetes No HIV seropositivity No acquired immune deficiency syndrome (AIDS) or AIDS-related illness No general anesthetic for 7 days prior to and 2 days following entry Primary language allows communication with study staff Demonstration of ability to read and understand pain scales required Ability to identify crisis starting time accurately, i.e., to within 6 hours