The drug, used to treat parasitic worms, has not been formulated or labeled specifically for over-the-counter use, like aspirin or an antacid.

Interest in using drugs or experimental treatments in unapproved ways has gained steam with Robert F. Kennedy Jr.’s appointment as head of the Department of Health and Human Services. Kennedy recently said on a podcast that people should have access to controversial alternative therapies like stem cells and chelation therapy to remove heavy metals from the body. The FDA has warned that neither should be used without oversight from a doctor.

The hype has prompted lawmakers in 16 states, including Idaho, to propose and in some cases pass legislation to make the pills readily available for anyone without a prescription. While health insurance covers many prescription drugs, including ivermectin, it doesn’t cover over-the-counter medicines.