# OnCo record chasteberry (technology). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/technologies/chasteberry/>
  a schema:MedicalTherapy ;
  onco:kind "technology" ;
  schema:identifier "chasteberry" ;
  schema:name "Chasteberry"@en ;
  schema:alternateName "Vitex agnus-castus"@en, "Chaste tree"@en, "Monk's pepper"@en ;
  schema:description "Chasteberry is used for premenstrual symptoms and breast pain, with some trial support for premenstrual symptoms. Combined with St John's wort it did not help menopausal symptoms. It has plant hormone activity and in laboratory studies may weaken hormone therapies, so people with hormone-sensitive cancers should ask their team first."@en ;
  schema:url <https://onco.cc/technologies/chasteberry/> ;
  schema:dateModified "2026-11-04"^^xsd:date ;
  schema:citation <https://www.mskcc.org/cancer-care/integrative-medicine/herbs/chasteberry> ;
  onco:status "phase-2" ;
  onco:tag "complementary", "supportive-care", "evidence:insufficient" ;
  onco:related <https://onco.cc/technologies/evening-primrose-oil/>, <https://onco.cc/technologies/wild-yam-cream/>, <https://onco.cc/technologies/st-johns-wort-interaction/> ;
  onco:sections <https://onco.cc/fronts/supportive-care/>, <https://onco.cc/fronts/hormonal/> ;
  onco:technologies <https://onco.cc/technologies/integrative-oncology/>, <https://onco.cc/technologies/dietary-supplements-treatment-interactions/>, <https://onco.cc/technologies/endocrine-therapy/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-toxicity-qol/> .