Effects of clonidine (10, 20, 40, 80 µg/kg BW, IP) on 2-h alcohol intake by adult male P rats. Clonidine was injected on each of 5 consecutive days (Days 1–5) at 30 min prior to onset of a 2-h free-choice between alcohol (15% v/v) and water. Alcohol was not available on weekends. The Pre-Drug Day was a Friday preceding Drug Days 1–5 (Monday–Friday of the following week) and Post-Drug Days 3 and 4 were on Monday and Tuesday of the week following termination of clonidine treatment. ***p < 0.001 vs. saline control treatment, independent of drug treatment day.