The invention discloses a kind of potassium chloride slow releasing capsule the content of described potassium chloride slow releasing capsule is slow-release micro-pill and slow-release micro-pill is by the supplementary material potassium chloride 70～97% of percentage by weight moulding material 0～10% slow-release material 2～20% plasticizer 0.5～5% and antiplastering aid 0～10% form.With potassium chloride and moulding material mix homogeneously adopt dry granulating machine to be prepared into the medicine carrying micropill; Then slow-release material plasticizer and antiplastering aid are mixed with into the slow release layer coating solution; The medicine carrying micropill is placed fluid bed and the slow release layer coating solution that is prepared into is injected in the fluid bed the medicine carrying micropill is carried out coating according to conventional method prepare slow-release micro-pill slow-release micro-pill incapsulates preparation cost invention product potassium chloride slow releasing capsule.The potassium chloride slow releasing preparation toxic and side effects of utilizing the present invention to prepare is few is convenient to patient's long-term treatment has improved drug safety and has improved the compliance of medication.

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