CPC A61K 9/167 (2013.01) [A61K 31/58 (2013.01); A61K 47/34 (2013.01)] | 6 Claims |
1. Dutasteride-containing microparticles, comprising dutasteride and a biodegradable polymer,
wherein,
the microparticles have a dutasteride drug evenly distributed in a spherical biodegradable polymer,
the microparticles have an average particle diameter of 20 to 70 μm,
the microparticles contain the biodegradable polymer and dutasteride at a weight ratio of 3:1 to 9:1,
the microparticles are capable of preventing an initial excessive release of dutasteride after injection into a body, and
the microparticles are capable of maintaining a drug administration effect of dutasteride according to an initial release after injection into the body.
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