The application discloses a preparation method of
finasteride tablets, and relates to the technical field of
medicine preparation. The method comprises the following steps: after a surfactant is prepared into an
aqueous solution, a first prescription amount of a binder is added to form a binder suspension
slurry;
finasteride, a filler, a first prescription amount of a disintegrating agent and a second prescription amount of the binder are premixed to obtain a premix; the binder suspension
slurry is added into the premix to perform wet
granulation to prepare wet granules; after the wet granules are dried and granulated, the wet granules are mixed with a second prescription amount of the disintegrating agent and a
lubricant, and then tabletting is performed, so that the
finasteride tablets are obtained. On the basis of ensuring that the tablets can be rapidly released, the method realizes that the hard tablets with appropriate
hardness and stable properties can be obtained under a lower main tabletting pressure. In addition, the method uses non-organic solvents for
granulation, so that the stability, safety and industrial production efficiency of the final product are all remarkably improved under the premise that no non-standard prescription auxiliary materials are additionally added.