Abstract: An automatic insulin stirring device includes an electric motor mounted in a housing and coupled by speed reduction gearing to a horizontally disposed drive shaft. An insulin bottle receptacle is mounted in offset alignment on the drive shaft at an acute angle, preferably about 5.degree., relative to the drive shaft. A thumbscrew holds the insulin container in the receptacle and the motor rotates the drive shaft to simultaneously turn the insulin container in rotation and cyclically longitudinally rock the container relative to the drive shaft, thereby moving the insulin container ends in concentric orbits about the drive shaft axis. Automated stirring of the insulin suspension is achieved without generating bubbles in the insulin suspension and without the need for manual rolling of the insulin bottle.