25 citations
,
September 2005 in “International Journal of Developmental Neuroscience” Morphine increases testosterone breakdown in the rat brain and spinal cord.
15 citations
,
March 2007 in “Hormones and Behavior” Finasteride boosts morphine's pain relief, stops tolerance, and reduces withdrawal in rats.
4 citations
,
April 2009 in “Journal of Pain” Finasteride boosts morphine's pain relief and prevents tolerance and withdrawal in rats.
July 2011 in “مجله علمی پزوهشی دانشگاه علوم پزشکی ایلام” Testosterone reduces, while finasteride enhances, morphine's pain relief.
63 citations
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August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.