“The antiallodynic effect of 30 &mgr;g of milnacipran was attenuated by intrathecal coadministration of 30 &mgr;g of yohimbine , an α2-adrenoceptor antagonist, 30 &mgr;g of methysergide, a serotonin receptor antagonist, or 30 &mgr;g of atropine, a muscarinic receptor antagonist (P < 0.01, respectively).”