Salinomycin sodium salt (Salinomycin sodium), an antibiotic potassium ionophore, is a potent inhibitor of Wnt/β-catenin signaling. Salinomycin sodium salt (Salinomycin sodium) acts on the Wnt/Fzd/LRP complex, blocks Wnt-induced LRP6 phosphorylation, and causes degradation of the LRP6 protein. Salinomycin sodium salt (Salinomycin sodium) shows selective activity against human cancer stem cells.