This is the only brand, for me, that ...
This is the only brand, for me, that actually prevents cold sores and canker sores.  Once you get your levels up to normal you only need to take it about once a week to maintain the effect.  I had not had a canker sore in years until I bought a different brand.  Never again!  Once I returned to Nature Made the sores were gone and have not returned.
Rating: 5 stars