Inhibitory effect of mitragynine an alkaloid with analgesic effect from Thai medicinal plant Mitragyna speciosa on electrically stimulated contraction of isolated guinea-pig ileum through the opioid receptor. Instrumental methods of chemical analysis; Himalaya Publishing House: Maharashtra India 1998; pp. White Vein Kratom Dosage Allerton the neuromuscular blockade produced by pure alkaloid mitragynine and methanol extract […]