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  • How are reviewers describing this item?
    good, great, daily, most and two.
  • Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 21.
  • Previous analysis of this listing was an F grade.
  • Our engine has profiled the reviewer patterns and has determined that there may be deception involved.
  • Our engine has determined that the review content quality is low.
  • Our engine has analyzed and discovered that 60.3% of the reviews are reliable.
  • This product had a total of 138 reviews as of our last analysis date on Jul 10 2020.


Most positive reviewquestion

Best magnesium supplement out there by far. The broad spectrum of magnesium types makes it highly bio-available. I've used ultr...  Read More

Least positive reviewquestion

Not enough review data to provide meaningful insight.

Most authentic reviewquestion

I have fibromyalgia and magnesium helps to keep the muscles relaxed. I've been taking this product for over a year and I'm very satisfied.

Least authentic reviewquestion

This product excels all other magnesium products I have tried. I've been taking these Source Naturals for 2 months now and I fi...  Read More

Helpful Insights


    Posted by a reviewer on Amazon

    Everyone who suffers from migraines is different, so this may not work for everyone.

    Posted by a reviewer on Amazon

    The pills are somewhat large, but shouldn't be an issue for most people.

Review Count History
Price History