When administering Chinese herbal extract preparations to children and the elderly, the dose is prescribed according to their age, weight, and physiological function, so they may need to be repackaged. In that case, it cannot be denied that the properties of the repackaged Chinese herbal extract preparation may change depending on the number of prescription days, temperature and humidity during storage, etc. In fact, there have been cases where repackaged Chinese herbal extract preparations stored in hospital wards have been returned due to discoloration. This time, we investigated the packaging paper and storage method used for repackaging Daikenchuto and Yokukansan. Although repackaging should not normally be performed, when repackaging is unavoidable, It was thought that moisture absorption could be suppressed by combining the use of a desiccant during administration and storage in cans.
