TWI814693B

The present application belongs to the technical field of medicine. Provided are a high-stability heavy metal removing composition, use and a dosage form thereof, and a method for preparing same. The composition comprises: A) 70 wt% to 95 wt% of a compound represented by formula (1) or a pharmaceutically acceptable salt thereof; B) 1 wt% to 25 wt% of a compound represented by formula (2) or a pharmaceutically acceptable salt thereof; and 0.001 wt% to 5 wt% of an alkaline compound. The alkaline compound is at least one of hydroxide, carbonate, bicarbonate, hydrophosphate, and carboxylate of an alkali metal, and ammonia water.