1. A drug information acquisition device comprising: an imaging tray that is provided between a drug distribution tray which supplies each dose of a plurality of types of drugs and a packet insertion guide, said imaging tray temporarily holds a dose of drug supplied from the drug distribution tray for imaging, said imaging tray having a bottom in which a row of V-shaped grooves, each having a first inclined surface and a second inclined surface, is formed; a vibrator that removes an overlap between the drugs corresponding to a dose supplied to the imaging tray and corrects the posture of the drugs using the first inclined surface and the second inclined surface of at least one of the V-shaped grooves; a light source that illuminates the drugs on the imaging tray; a first camera and a second camera that are provided so as to face the first inclined surface and the second inclined surface in the bottom of the imaging tray, respectively, and capture images of the drugs, whose posture is corrected by the vibrator and which are illuminated by the light source, on the imaging tray; and a drug information acquisition computer configured to process a first image and a second image which are respectively acquired from the first camera and the second camera to acquire drug information including at least outward appearance information of the drugs in the first image and the second image.