According to WebMD.com: "The practice, called 'off-label" prescribing, is entirely legal and very common. More than one in five outpatient prescriptions written in the U.S. are for off-label therapies."<ref>[https://www.webmd.com/a-to-z-guides/features/off-label-drug-use-what-you-need-to-know#1 Off-Label Drug Use: What You Need to Know]</ref> In other words, originally approved for use in humans as an anti-malarial drug, it can be prescribed by a treating physician for other uses. | According to WebMD.com: "The practice, called 'off-label" prescribing, is entirely legal and very common. More than one in five outpatient prescriptions written in the U.S. are for off-label therapies."<ref>[https://www.webmd.com/a-to-z-guides/features/off-label-drug-use-what-you-need-to-know#1 Off-Label Drug Use: What You Need to Know]</ref> In other words, originally approved for use in humans as an anti-malarial drug, it can be prescribed by a treating physician for other uses. |