Farag, A G A Tramadol (opioid) abuse is associated with a dose- and time-dependent poor sperm quality and hyperprolactinaemia in young men. [electronic resource] - Andrologia Aug 2018 - e13026 p. digital Publication Type: Journal Article ISSN: 1439-0272 Standard No.: 10.1111/and.13026 doi Subjects--Topical Terms: AdolescentAdultAnalgesics, Opioid--adverse effectsGonadotropins--metabolismHumansHyperprolactinemia--etiologyHypogonadism--etiologyMaleMiddle EastOpioid-Related Disorders--complicationsProlactin--metabolismSemen AnalysisSmoking--epidemiologySperm Motility--drug effectsSpermatogenesis--drug effectsTestis--drug effectsTestosterone--metabolismTramadol--adverse effects