Posted by iHerb Customer on Oct 21, 2017 | Verified Purchase
Source Naturals always has the greatest potency and purity because it is a Canadian company that stands apart from the deceptive American manufacturing practices that often as not turn out worthless pills with no potency whatsoever. That said, this Source Natural product needs better labeling. It's NOT A CAPSULE ! This came as a shock., for starters. Even more important, it seems to be some sort of timed release tablet that takes forever to disolve. For people who cannot swallow large tablets, and need to disolve the product to use it, this can result in considerable inconvenience. It takes at least 12 hours in something acidic ~ like grapefruit juice ~ to even make a dent in it. That said, the potency is GREAT, well worth the effort if you're willing to wait.