Figure 3.

Methamphetamine (MA) self‐administration reduces 10 and 20 percent alcohol consumption and preference. (a) Timeline illustrating the schedule of combining the two‐bottle choice procedure with daily 2‐hour self‐administration sessions and extinction sessions. The preference for (b) 10 percent and (d) 20 percent alcohol was significantly reduced during MA self‐administration (rose shading). Similarly, intake of (c) 10 percent and (e) 20 percent alcohol was also significantly reduced during MA self‐administration (rose shading). The red symbols indicate significance between MA and saline self‐administration groups on that day (p < 0.05); n = 9–21/group