adjuvant

Adjective

• enhancing the action of a medical treatment
  • the adjuvant action of certain bacteria
    

• furnishing added support
  • an ancillary pump
    
  • an adjuvant discipline to forms of mysticism
    
  • The mind and emotions are auxiliary to each other
    

Noun

• an additive that enhances the effectiveness of medical treatment

Related words

• Synonyms: 
  accessory , adjunct , ancillary , appurtenant , auxiliary