Bkmrk
WEBMD.com - states no good evidenced for purported benefits. Says don't take if not tested for contaminants.
It's cheap. $4.88 at walmart for 90 400mg capsules. To reach the levels talked about in my first link above, you need to take 4 to 5 capsules a day.
Are the kind you can buy at a vitamin store also “enhanced” ??