Galritus Pen Royale is an insulin delivery device. This uses glargine, a human insulin analogue. This is a product that can be used with other forms of insulin to improve the body's ability to respond to it and make it easier for blood sugar levels to be regulated over the course of a day. This is a form of insulin that is injected under the skin and can be added once a day, preferably at the same time if possible. This should not be used if the body is bearing with the effects of low blood sugar.Use under medical supervision.