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  • How are reviewers describing this item?
    good, great, easy, small and low.
  • Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 10.
  • Previous analysis of this listing was an C grade.
  • Our engine has profiled the reviewer patterns and has determined that there is high deception involved.
  • Our engine has analyzed and discovered that 52.4% of the reviews are reliable.
  • This product had a total of 265 reviews as of our last analysis date on Jan 30 2020.


Most positive reviewquestion

A good source of the D3 vitamin - it is becoming more & more topical in health circles that D3 -or lack thereof - is a cause of...  Read More

Least positive reviewquestion

Not enough review data to provide meaningful insight.

Most authentic reviewquestion

I've been taking this for years with good results.

Least authentic reviewquestion

Good D3 - this company is just realy great!

Helpful Insights


    Posted by a reviewer on Amazon

    This product is not readily availabe in the cvs or walgreen's; so the 2-3 day delivery is good.

    Posted by a reviewer on Amazon

    Made three complete meas in the first five days of ownership.

    Posted by a reviewer on Amazon

    It arrived quickly-actually before the stated time.

    Posted by a reviewer on Amazon

    Purchase bio tech d3-5 at the request of my physician.

Review Count History
Price History