peripheral injections of scopolamine , an anticholinergic agent , or haloperidol , a catecholamine blocking agent with pronounced antidopaminergic actions , substantially reduced the water intake of rats induced to drink by periods of deprivations or by subcutaneous injections of either hypertonic saline , polyethylene glycol , or isoproterenol .
C0007412
catecholamine
C0022245
isoproterenol