A clear glass vial of ketamine hydrochloride solution with a red cap on a white background.
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​High-Concentration Es-Ketamine Nasal Solution vs. Full-Spectrum Racemic Ketamine: The 2026 NMDA Guide

​Es-Ketamine, or S(+)-ketamine, is the isolated mirror-image enantiomer of ketamine. It features a 3- to 4-fold higher binding affinity to