The invention relates to solid medicinal forms containing at least one active ingredient and at least one pharmaceutically compatible, water soluble drying agent which is selected from the group consisting of trimagnesium dicitrate and/or calcium chloride, the solid medicinal form having a drying loss of at most 6% and a relative equilibrium moisture content of 25% or less. The invention also relates to solid medicinal forms containing a moisture-sensitive active ingredient and trimagnesium dicitrate.