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Natrol Easy-C 1000mg with Bios, Vegi Tablets
More product info
From Natrol
This report was last updated 6/9/2017.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Last Updated: Jun 9, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Vitamin C with authentic reviews:
Report Card
Pass Overall Grade
FAIL 
Suspicious Reviewers
Suspicious ReviewersWARN Reviewer Participation
Reviewer ParticipationPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted Reviews
Most Trusted Reviews
A good product. I've been using it for years. My ... [Go to full review]
Jun 7, 2015
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (5 deleted Reviews; avg. rating: 3.4) -
Brand Repeater (7 of 222 reviews for this brand; avg rating: 5.0) -
Overlapping Review History: reviewed 4 of 9 top products -
Easy Grader (avg. rating: 4.4)
Critical Reviewer (avg. rating: 3.4)
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Least Trusted Reviews
We couldn't find any low-quality reviews
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
4 of the 20 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.
Warn Reviewer Participation
Reviewer Participation
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- 70%
- 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 14 reviewers (or 70%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
Rating Trend
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- 0%
- Created on high-volume days
We counted 20 reviews for this product over the span of 3,082 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 1 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 Unverified Purchases
Unverified Purchases
1 of the 20 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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.
Pass Word Count Comparison
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 Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
2 reviews
Common Phrases in Titles:
2 reviews
1 of the 20 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
10% also reviewed:
Nursing Diagnosis Handbook: An Evidence-Based... by Betty J. Ackley
10% also reviewed:
Vet's Best Cat Urinary Tract Support... by Vet's Best
10% also reviewed:
Silver Biotics 16 Ounces by American Biotech Labs
10% also reviewed:
Solaray Mega Vitamin B-Stress, Two-Stage... by Solaray
10% also reviewed:
Blue Buffalo Wilderness Dog Treats by Blue Buffalo
10% also reviewed:
Three Dog Bakery Biscuits, Baked Dog Treats, 32 oz by Three Dog Bakery
5 of the 20 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.
Pass Reviewer Ease
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 4.4. 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
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
1 of the 20 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive 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.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.