tokens: 1 g were randomly assigned to bupropion HCl 120 mg / kg treatment by intraperitoneal ( IP ) administration in 7 groups ( 9 to 10 animals per group ). Bupropion HCl was infused through a surgically implanted IP dosing catheter with infusions in each group of 0 min , 15 min , 30 min , 60 min , 90 min , 120 min , and 240 min .