I've been subscribing to consumerlab for years. Most people are apparently unaware that supplements are NOT fda regulated. What's on the label may bear little or no relation to what's inside the bottle. When it comes to supplements, you really don't know what you're buying- and you may be buying things like lead or arsenic contamination. Btw a few months ago there was a story in the nytimes about the unreliability of vitamin supplements purchased from large, well known retailers. Consumerlab buys items through normal retail channels and sends them to independent labs to find out what's really there. An invaluable service.