Methods are provided for coating particles characterised by the addition of a powdered excipient, typically during coating. Typically, the coating method comprises Wurster fluidized bed coating. The method provides for coating particles in a coater comprising a coating processing chamber, wherein the particles comprise an active pharmaceutical ingredient. The coated particles are preferably for use in a method of administering an active pharmaceutical ingredient or for use in a method of treating or preventing a disease or condition. The invention further provides a pharmaceutical composition comprising coated particles obtainable by the method of the invention, preferably as part of a liquid formulation for oral administration.
