estradiol estradiol hexahydrobenzoate http://purl.bioontology.org/ontology/MESH/C529764 https://en.wikipedia.org/wiki/Estradiol_hexahydrobenzoate https://www.wikidata.org/wiki/Q27276403 An estrogen medication which was previously used for indications such as menopausal hormone therapy and gynecological disorders. EHHB is given by injection into muscle at regular intervals, for instance once every few weeks. EHHB estradiol ester