Support WBURYou Can Buy Insulin Without A Prescription, But Should You?Play04:48Download AudioSarah Jane TribbleDecember 14, 2015 ShareCarmen Smith now gets the insulin she needs via her doctor's prescription. When she lacked health insurance, buying a version of the medicine over the counter was cheaper, she says. But it was hard to get the dose right. (Lynn Ischay for NPR)