@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/methadone>
  skos:definition "Methadone, a synthetic narcotic with a suppression effect lasting 24 to 36 hours, is the most effective medication to help heroin patients overcome their addiction. Methadone maintenance treatment (MMT) rapidly expanded following its demonstration as an effective medical intervention in the mid-1960s. [Source: <a href=\"https://sk.sagepub.com/reference/socialproblems/n351.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Social Problems; Methadone</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/types_of_drugs>, <https://concepts.sagepub.com/social-science/concept/substance_abuse>, <https://concepts.sagepub.com/social-science/concept/drug_classification>, <https://concepts.sagepub.com/social-science/concept/drug_antagonists>, <https://concepts.sagepub.com/social-science/concept/controlled_drugs>, <https://concepts.sagepub.com/social-science/concept/analgesics> ;
  skos:prefLabel "methadone"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/drug_classification>
  skos:prefLabel "drug classification"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/substance_abuse>
  skos:prefLabel "substance abuse"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/drug_antagonists>
  skos:prefLabel "drug antagonists"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/controlled_drugs>
  skos:prefLabel "controlled drugs"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/types_of_drugs>
  skos:prefLabel "types of drugs"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/analgesics>
  skos:prefLabel "analgesics"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/methadone> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/methadone> .