Randomization Phase If you/your child agree to take part in this study you/your child will have an equal chance of receiving one of two possible liquids: Megace (7.5 mg/kg/day taken once in the morning) or the same amount of a placebo (a placebo is a substance that looks and tastes exactly like the real medicine, however it is an inactive substance that contains no drug). This assigning to the drug or the placebo is called randomization. Neither you nor your physician can choose or know which treatment you are receiving. This "blinding" is necessary to fairly test these drugs. In an emergency, your physician can immediately find out which of the drugs/treatments you are receiving.