| abstract |
(57) [Summary] [PROBLEMS] To provide a trace element preparation which is excellent in heat stability against high-pressure steam sterilization and aging, has excellent stability in the pH of a high calorie infusion preparation, and can be easily co-injected at the time of clinical use. provide. A trace element preparation comprising an aqueous solution containing iron colloid having chondroitin sulfate as a protective colloid and selenium ion and containing manganese ion, zinc ion, copper ion and iodine ion and having a pH in the range of 5 to 6. . |