Percentage of the maximum possible effects (%MPE) of fluoxetine (A, n = 6), desipramine (B, n = 5) or GBR12909 (C, n = 5) or 2‐BFI alone and in combination with fluoxetine (D), desipramine (E) or GBR12909 (F), on CCI‐induced mechanical nociception. Data shown are means ± SEM.