Lantus insulin This is a bottle of Lantus insulin, the long lasting insulin that I take. It works over a period of 24 hours. It allows me to have a much more flexible schedule because of the way it works and how I can combine it with my Humalog shots. It is a clear color, as opposed to being cloudy, as some insulin's are. I take this insulin once a day, before I go to bed. More info on Lantus insulin |