The present invention relates to an amorphous form of Allisartan isoproxil, which is an angiotensin II receptor antagonist. The amorphous form has high fluidity, high bulk density and no significant electrostatic phenomenon. By discovering the amorphous form, it is possible not only to reduce the generation of dust in the production process, but also to provide convenience in the production process of Allisartan isoproxil. The present invention also relates to a pharmaceutical composition containing an amorphous form of Allisartan isoproxil, and the above-mentioned pharmaceutical composition has high stability. Therefore, the Allisartan isoproxil tablets prepared from the above pharmaceutical composition can effectively ensure the quality of medicines.
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