It is used in clinical treatment pharmaceutical research cell culture experiments and studies of glucose uptake and metabolic regulation. Its specific application depends on the formulation and whether it is intended for medical or research use.

It is primarily used to control blood sugar levels in people with diabetes mellitus. In laboratory research it is also used to study glucose metabolism and insulin signaling.

Insulin solution is a liquid preparation containing insulin a hormone that regulates blood glucose levels by helping cells absorb glucose from the bloodstream.