Leucovorin works (at least for some cases of CFD) because it bypasses a folate t...

		trehalose 5 months ago \| parent \| context \| favorite \| on: FDA takes action to make a treatment available for... Leucovorin works (at least for some cases of CFD) because it bypasses a folate transport protein that can be nonfunctional and fail to transport ordinary folic acid into the brain. I guess that doesn't necessarily mean they couldn't do what you're suggesting though.