“… ellagic acid treatment (50mg/kg, p.o.) was prevented by pretreatment with p-chlorophenylalanine (… antagonist), ketanserin (5mg/kg, i.p., a 5HT(2A/2B) receptor antagonist), ondansetron (1mg/kg, i.p., a 5HT(3) receptor antagonist), prazosin (1mg/… not with naloxone (1mg/kg, i.p., an opioid receptor antagonist).”