possible ambien side effect

Increased irritability with respect to stupid fucking things over which I have no control. For example, the Transportation Safety Administration and the useless sign in West Hyattsville Metro, which keeps repeating the same service advisori es about West Falls Church over and over without a break to tell me something worthwhile like when the next train is coming. Felt similar sense of stupid impotent petty rage in the hotel in Maputo. Probably just general tiredness but maybe the ambien didn't help. Who knows. Don't feel any other side effects, fwiw.