The U.S. Food and Drug Administration cleared an Iowa hand sanitizer company of making misleading claims about its productโs ability to โmitigate, prevent, treat, diagnose, or cure COVID-19.โ Prefense LLC, of Muscatine, faced an April 23 FDA complaint that made the company the nationโs first manufacturer to get an FDA warning letter claiming the firm marketed a hand sanitizer with unproven COVID-19-related claims.








