immunomodulatory
/ˌɪmjʊnəʊˈmɒdjʊlət(ə)ri/ /ˌɪmjʊnəʊˈmɒdʒʊleɪt(ə)ri/ /ˌɪmjʊnəʊˌmɒdjʊˈleɪt(ə)ri/Medicine and Biology
adjective
That modifies the function of the immune system.
Origin
1970s. From immuno- + modulatory, after immunomodulation and immunomodulator.