Abstract: A composite which is obtainable by mixing calcium pantothenate with a per se neutral or basic magnesium or calcium lactate or carbonate in the presence of water and/or a lower alcohol, and drying the resulting mixture, is stable with little decrease of the content of calcium pantothenate during storage.When other drugs, which may cause changes as the result of combination with calcium pantothenate, are combined to produce various preparations, the composite is stable because they are hardly affected by other ingredients and hardly affect other ingredients; for example, in production of tablets, powders, granules, and capsules, complicated processes to separate from other ingredients are not required, and the excessive amount in anticipation of the loss along with time can be reduced markedly.

Abstract: A vitamin B.sub.12 composition wherein vitamin B.sub.12 exists as dispersed in a mixture of starch and dextrin can keep vitamin B.sub.12 stable for a long time and can be easily manufactured by the ordinary convenient method without employing any special equipment.