Bogota, Colombia – The Lantus Glargine Insulin pen as distributed in Central and Latin America by Sanofi. The pen contains a built-in cartridge of Insulin that controls the blood glucose level for diabetic patients. To the left are two different sizes of needles that are sealed in individual containers; the one with the green label is the shortest at 4 mm of length. The purple labelled container has a 5 mm needle. The pen device is manufactured by Sanofi-Aventus in Germany. Photo shot in a studio environment, shows two pens, placed on a polished rosewood surface. The pen closest to the camera is new, and full of Insulin; it has been armed with the longest needle at 8mm length. The guage at the top end has been set to deliver 10 Units of Insulin. Closeup shot; horizontal format. No people.