A Sydney pharmacist who repeatedly drugged a female colleague after she refused his sexual advances has been sentenced to a minimum of 10 months in jail.

Yan Chi "Anthony" Cheung, 34, spiked the water and coffee of his colleague Pamela Leung as they worked together in a pharmacy on the University of NSW's Kensington campus.

He immediately appealed against the decision of Waverley Local Court magistrate Michael Barko and was granted bail.

Mr Barko sentenced Cheung to a minimum 10 months but a maximum of 12 months' imprisonment.