It is for vaginal suppository - hydrophobic and causes irritation that's why it's seldom used as rectal supp SLOWER TO SOFTEN and mix with the physiologic fluids than is cocoa butter and therefore provides a SLOWER RELEASE have a tendency to absorb moisture as a result of the HYGROSCOPIC NATURE, they must be protected from atmospheric moisture may have a DEHYDRATING EFFECT and irritate the tissues upon insertion. most frequently used in preparation of vaginal suppositories, prolonged local action of the medicinal agent is usually desired.