The multiple drug compatibility search feature is designed to facilitate searching for compatibility information on a number of two-drug or drug-solution combination at one time. Studies of drug compatibility are usually conducted on two drug entities together. For convenience, the multiple drug search feature permits the user to query the database for a number of these two-drug combinations as one search. However the user should not misinterpret the compatibility information to apply to more than the two specific agents in combination under the conditions of the study. The compatibility of three or more drugs in combination is generally unavailable.