Transdermal delivery of naltrexone and its active metabolite 6-beta-naltrexol in human skin in vitro and guinea pigs in vivo.
Paudel KS, Nalluri BN, Hammell DC, Valiveti S, Kiptoo P, Hamad MO, Crooks PA, Stinchcomb AL. Transdermal delivery of naltrexone and its active metabolite 6-beta-naltrexol in human skin in vitro and guinea pigs in vivo. J Pharm Sci. 2005 Sep; 94(9):1965-75.