A solid heparin tablet composition has a melting point of 25.degree. C. or higher and is a continuous lipid component containing one or more polar lipids, one or more non-polar lipids, optionally one or several of water and mono- to trivalent alcohol in an amount of up to 15% by weight of the composition, and native heparin or fractionated heparin. Also described is a corresponding tablet, processes for production of the composition and the tablet, and a method of preventing or treating conditions amenable to preventive or therapeutic treatment by administration of the tablet.