How Much Folic Acid For Blood Brain Barrier Repair?

How Much Folic Acid For Blood Brain Barrier Repair? Most vitamins sold in the United States have the recommended daily amount of folic acid (400 mcg) that women need to prevent neural tube defects. Can folic acid cross the blood-brain barrier? Folate, when metabolized into active L-methylfolate, crosses the blood-brain barrier and is thought to