Esketamine nasal spray, an NMDA glutamate receptor antagonist, offers a fast-acting treatment option for patients with treatment-resistant depression (TRD) who have not responded to several prior therapies. A group of six European experts with clinical experience using esketamine nasal spray developed consensus statements on practical considerations before, during, and after administration. The guidance is based on their experience and available literature, aiming to help clinicians unfamiliar with the treatment. Further real-world use is expected to expand existing knowledge.
Treatment-resistant depression (TRD) patients have often been excluded from antidepressant drug trials, leaving unclear clinical guidance. Intranasal esketamine, a non-monoaminergic treatment that modulates the glutamatergic system to improve neuroplasticity, offers a new option. A Spanish committee of nine psychiatrists expert in TRD reviewed literature from 2014 to 2024 and developed a consensus on practical management. They recommend a treatment algorithm for TRD with intranasal esketamine, including guidance for patients with psychiatric comorbidities and for those who show less than a 50% symptom reduction after the first induction phase. Treatment should occur at the patient's usual mental health center, with dose optimization and flexible management based on clinical progress. This is the first such consensus in Spain.
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