The invention discloses a sustained release preparation of
tandospirone citrate with the 5-HT1A
receptor stimulating effect, and a preparation method of the sustained release preparation. The preparation contains
tandospirone citrate, a hydrophilic gel material and a
wax material at a certain ratio, and an appropriate amount of filler and an appropriate amount of
lubricant are added. The sustained release preparation has the effect of maintaining 24h sustained release, meanwhile, during the release period of medicines, no burst release risk exists, the
medicine release uniformity is good, a preparation process is simple, the
controllability of the process is strong, after medication, the too large
blood concentration fluctuation is avoided, and the medication safety, effectiveness and compliance are improved.