Today, the U.S. Food and Drug Administration approved a lotion to treat head lice for nonprescription, or over-the-counter (OTC), use through a process called a prescription (Rx)-to-OTC switch. The FDA initially approved Sklice (ivermectin) lotion, 0.5% for the treatment of head lice infestation in patients 6 months of age and older as a prescription drug…

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