Changes in the formulation of peritoneal dialysis solutions will continue. For the present, dextrose dialysis will remain the osmotic solute of choice. How amino acids and glucose polymers as solute replacements for glucose fit into the dialysis prescription remains to be seen. The lower concentration of calcium and magnesium appears to be gaining acceptance in many centers. It is feasible that in the next few years the challenge of adding bicarbonate to the peritoneal dialysis solution will be circumvented, because there appears to be a real clinical need for such an improvement. Pediatric modifications will be necessary, appreciating that such changes will have an economic penalty, and thus must have proven value.