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Amazon.com > Health & Household > Vitamins, Minerals & Supplements > Glandular Extracts > Thyroid Extracts
ThyroLibrium Thyroid Energy and Support Supplement for Men and Women
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From VH Nutrition
This report was last updated 3/11/2018.
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Report Info:
Last Updated: Mar 11, 2018
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL
Deleted Reviews

FAIL
Brand Repeats

FAIL
Suspicious Reviewers

FAIL
Reviewer Participation

WARN
Unverified Purchases

WARN
Incentivized Reviews

WARN
Reviewer Ease

WARN
Phrase Repetition

PASS
Rating Trend

PASS
Word Count Comparison

PASS
Overlapping Review History

Most Trusted Reviews
Nothing special, I didn't feel anything better. [Go to full review]
Dec 22, 2014
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 2.6)
Least Trusted Reviews
I am thrilled with this product. It is affordable and ... [Go to full review]
Apr 28, 2015
0%
TRUST
TRUST
-
Unverified Purchaser
-
Never-Verified Reviewer
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Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0)
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Brand Monogamist (13 of 13 reviews for this brand; avg rating: 4.9)
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Overrepresented Participation (posted 13 Reviews)
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Easy Grader (avg. rating: 4.9)
Analysis Details
Fail
Deleted Reviews

We discovered a total of 2 deleted Reviews for this product, with an average rating of 4. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Fail
Brand Repeats

Brand Repeaters
17 of the 25 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
Brand Loyalists
11 of the 25 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Brand Monogamists
7 of the 25 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
Fail
Suspicious Reviewers

Never-Verified Reviewers
8 of the 25 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 5.0 while the reviewers who have written at least one verified purchase review rated this product an average of 4.1. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
7 of the 25 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
11 of the 25 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 5.0 while all other reviewers rated this product an average of 3.9. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Fail
Reviewer Participation

-
- 40%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 10 reviewers (or 40%) are within an overrepresented participation group. These reviews have rated this product an average of 5.0, while all other reviews have rated this product an average of 4.0. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn
Unverified Purchases

19 of the 25 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, the discrepancy in ratings between the unverified purchases and verified purchases isn't significant enough to rule out the possibility of it being due to random chance.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Warn
Incentivized Reviews

On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
4 of the 25 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. While we could not find a statistically significant difference between the average rating of incentivized reviews and non-incentivized reviews, the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Warn
Reviewer Ease

The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.5, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.5 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Phrase Repetition

Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
3 of the 25 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass
Rating Trend

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- 0%
- Created on high-volume days
We counted 25 reviews for this product over the span of 647 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Word Count Comparison

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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
36% also reviewed:
DecoArt Americana Acrylic Paint, 2-Ounce, Grey Sky by DecoArt
12% also reviewed:
White Kidney Bean Extract- 1000mg Per Serving,... by White Kidney Bean Extract
12% also reviewed:
Professional and Stylish "Thank You Cards": 12... by pretty. simple. cards.
12% also reviewed:
Women's Turtle Neck Knit Long Sleeve Slim Fit... by Zealmer
12% also reviewed:
BRI L-Carnitine - 1000mg per Serving Premium... by BRI Nutrition
8% also reviewed:
Cable Management Sleeve, JOTO Cable Sleeve, 3.3ft... by JOTO
8% also reviewed:
HBO Max: Stream TV & Movies by WarnerMedia Direct, LLC
Does not include products
from the same brand
from the same brand
5 of the 25 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.