A medicine feeding unit configured to feed solid medicines, the unit including: a medicine feeder having a driven shaft and a support having a driving shaft that is connected with the driven shaft. The driven shaft has a driven shaft body and a driven engagement member. The driving shaft has a driving shaft body and a driving engagement member. The driven engagement member is biased in a direction approaching the driving engagement member. The unit further includes a rotation preventing part configured to allow the driven engagement member to rotate in a mounted state in which the medicine feeder is mounted on the support and to prevent the driven engagement member from rotating in a detached state in which the medicine feeder is detached from the support.
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