Adjuvant or Pharmaceutical Preparation for Transdermal or Transmucousal Administration

摘要

An adjuvant for transdermal or transmucosal administration which comprises at least one substance selected from an aliphatic alcohol, a free fatty acid and a fatty acid derivative but does not contain a substance represented by the following formula: wherein R3 and R4 may together form a cyclic ring, and R1 and R2 independently represent an alkyl side chain having 1 to 16 carbon atoms.