| abstract |
[Problem] To provide a useful pharmaceutical preparation which is free from coloring due to interaction with benzyl alcohol when a non-condensed tricyclic aromatic hetero compound is formulated. One or more selected from N-alkyl-2-pyrrolidone, crotamiton, diester of dibasic acid and a plasticizer are used as a non-condensed tricyclic fragrance represented by the general formula (1). A pharmaceutical composition comprising a group hetero compound. (R1 and R2 are each independently H, alkyl group, alkyloxy group, halogen atom, halogenated alkyl group) [Selection figure] None |