The present disclosure is drawn to a coated print medium, a method of preparing a print medium, and a printing system. The coated print medium can comprise a substrate and a coating applied to the substrate. The coating can comprise, by dry weight, 5 wt% to 30 wt% of a polymeric binder, 20 wt% to 50 wt% of a cationic latex, 5 wt% to 15 wt% of a multivalent cationic salt, 1 wt% to 20 wt% of an optical brightener, and 1 wt% to 10 wt% of an anti-quenching agent selected from the group consisting of a sulfonated diphenyloxide, polyvinyl pyrrolidone, and combination thereof. In this example, if the polymeric binder is polyvinyl pyrrolidone, the anti-quenching agent is the sulfonated diphenyloxide.