A pharmaceutical dosage form comprising solid and liquid components, the solid component comprising omeprazole as active ingredient and one or more water soluble excipients, wherein the liquid component comprises a surfactant, water and optional further excipients. The water soluble excipient may be a sweetener, preferably isomalt. The surfactant may be Polysorbate 80. Further excipients may include biocides, buffers, antifoaming agents as well as flavourings and other sweeteners and surfactants. The solid and liquid components are kept separate until just before administration where they are mixed. A delivery system is described that holds both components and has release means to release the solid component into the liquid component.