All About Trump’s Alleged Autism Cure Leucovorin is a form of folic acid. If you haven't heard by now, the U.S. Food & Drug Administration (FDA) announced its intent to approve Leucovorin use as a means to treat autism. Continue reading below to learn more about the Trump Administration's announcement and all about the drug Leucovorin. "The move comes as drugmakers face pressure from the Trump administration to move production to the U.S.," according to the BBC. “We warned on Tylenol — but also approved Leucovorin for kids with severe autism who have a blocked folate receptor.