The best next drug in the course of generalized anxiety disorders: the "PN-GAD-algorithm".

Objective: Today, there are many pharmacotherapeutic options for generalized anxiety disorder (GAD). The question is, which is the best medication for a particular patient at a particular moment? This is especially challenging because GAD is by definition a chronic disorder and new interventions should learn from earlier experiences. An algorithm which can help to use pretreatment information for drug selection is the "Pretreatment - Next Treatment (PN) - Algorithm".