The results were pretty eye opening: When they analyzed 5 pills from the same bottle the potency of vitamin D ranged from 52% to 135% of the dose stated on the label. USP standards state that the potency should not vary by more than 10% from one pill to the next. Only 25% of the brands tested met USP standards for all 5 pills.
The results were pretty similar when they analyzed 1 pill from 5 bottles with the same lot number, namely that the potency of vitamin D ranged from 57% to 138%. But, when they analyzed pills from 5 bottles with different lot numbers, the results were even more disappointing, with the potency ranging from 9% to 140%.
So what's the bottom line for you? That's simple - it's buyer beware. This is just one more example of the shoddy quality control that is so prevalent in the industry.
Once again my advice is to choose only well respected manufacturers that have a long-standing reputation for strict adherence to the highest quality control standards.
Your health is too important to take chances with the cheapest or newest supplement manufacturer.
To Your Health!
Dr. Stephen G Chaney
These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure or prevent any disease.