Depending on state law, some types of insulin are available without a prescription. As of 2007, patients can purchase older types of insulin, such as insulin regular, without a prescription in all states except Alaska, states Islets of Hope.
Insulin pumps and insulin analogs, or synthetic insulin, require a prescription in every state, advises Islets of Hope. Insulin analogs include Levemir and Lantus, states the University of California, San Francisco.
Although people can purchase certain types of insulin without a prescription, some states require a prescription for the syringes. Some of these states include Delaware, Massachusetts and Maine, states Islets of Hope. Some pharmacies require prescriptions for insulin and syringes even if state law does not require it.