Pharmacokinetics and pharmacodynamics of orally administered S-ketamine in healthy participants.
Journal of psychopharmacology (Oxford, England) June 25, 2026 Joost C Van Mechelen, Tobias A Wieles, Laura Borghans et al.
Oral S-ketamine (S-KETPO) is being explored as an alternative to intravenous maintenance treatment (S-KETIV) in treatment-resistant depression (TRD). However, the first-pass effect with S-KETPO significantly alters S-ketamine's bioavailability and the systemic exposure of its active metabolites, raising potential safety and efficacy concerns. This study characterized the pharmacodynamic and...