adjuvant adjuvant in pharmacology, an adjuvant is a drug or other substance, or a combination of substances, that is used to increase the efficacy or potency of certain drugs. specifically, the term can refer to: adjuvant therapy in cancer management analgesic adjuvant in pain management immunologic adjuvant in vaccines this is a specialized usage of a word (derived from the latin verb "adjuvare", to help), which also has a more general meaning as someone or something assisting in any operation or effect. this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.