Novel, stable aqueous coating dispersions of wax or combination of waxes are described. The composition apart from wax includes an emulsifier and a plasticizer. The pharmaceutical applications of the dispersion include taste masking, stabilization and release retardation of drugs.Linvention concerne de nouvelles dispersions de revêtement aqueux, stables de cire ou dune combinaison de cires. Ladite composition comprend un émulsifiant ou un plastifiant. Ladite composition pharmaceutique de la dispersion comprend un masquage du goût, la stabilisation et ladministration retardée de médicaments.