Colchicine is an alkaloid prepared from the dried corns and seeds of Colchicum autumnale, the autumn crocus or meadow saffron. It is a pale yellow powder soluble in water in 1:25 dilution. Colchicine Tablets, USP are oral anti-inflammatory agents supplied in two dosage strengths 0.5 mg (l/120 gr) and 0.6 mg (l/100 gr). The chemical name for colchicine is (S) N-(5,6,7,9-tetrahydro- 1,2,3, IO-tetramethoxy-9-oxobenzo [alpha] heptaien-7-yl) acetamide. Inactive Ingredients 0.5 mg tablet: Calcium carbonate, confectioner†s sugar (contains corn starch), D& C Yellow No. 10, dextrin, stearic acid, sucrose and talc. 0.6 mg tablet: Acacia, corn starch, D& C Yellow No. 10, lactose, stearic acid and talc.