Antagonism of Antinociceptive Effect of Hydro-Ethanolic Extract of Hypericum perforatum Linn. By a non Selective Opioid Receptor Antagonist, Naloxone

F. Subhan, M. Khan, M. Ibrar, Nazar-ul- Islam, A. Khan and A.H. Gilani

Pakistan Journal of Biological Sciences 10 ( 5 ): 792 - 796 , 2007