Syringes

A syringe, calibrated for use with a predetermined liquid medication having a particular active pharmaceutical ingredient (API) at a particular weight per unit volume (w/v) concentration, the syringe comprising:

• a plunger and a barrel configured such that the plunger, or an end portion of the plunger, is sealingly receivable through an opening at one end of the barrel and within the barrel and slidingly moveable lengthwise within the barrel, which configuration forms a volumetrically adjustable reservoir inside the barrel into which the liquid medication may be loaded through an intake opening for the liquid medication at the other end of the barrel,
• wherein:
• the barrel is made, in whole or in part, from substantially transparent material through which liquid medication inside the reservoir is visible;
• the barrel comprises, extending along its lengthwise axis, two or more graduated scales of liquid medication API weight dosages on the substantially transparent material of the barrel, each of the two or more graduated scales occupying non-overlapping arcs running lengthwise along the circumference of the barrel;
• each graduated scale is formed of a plurality of increment API weight dosage lines for the liquid medication, each increment line running perpendicular to the lengthwise axis of the barrel and immediately adjacent increment lines of any one graduated scale indicating API weight dosages that differ from each other by no more than 100 mg;
• increment lines of one graduated scale are offset, along the lengthwise axis of the barrel, from increment lines of the other graduated scales;
• and
• at least every fifth increment line of any one graduated scale is labeled with the numerical value of the weight dosage of the API indicated thereby.