Garlic Ahh, yes the great tasting stuff in Italian food, this little herb, yup you herd me herb is an excellent blood purifier.
There is one major draw back to it,  the recommended intake is not cooked, though it is very tasty in spaghetti, it has very little effect after cooked, the recommended intake is 1 clove fresh, yuck!
There are alternatives, garlic tablets, I recommend the ones that curb "burping", a lot easier to handle. There is a "no smell" brand out as well.