CDP Choline (Citicoline) Supplement, Pharmaceutical Grade, Made in USA (60 Capsules 300mg)
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Top products in Vitamins with authentic reviews:
Fail Overall Grade
FAIL Deleted Reviews
FAIL Brand Repeats
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Incentivized Reviews
Most Trusted Reviews
I started taking this because it's supposed to help with ... [Go to full review]
Sep 16, 2018
- Verified Purchaser
- Take-Back Reviewer (4 deleted reviews; avg. rating: 3.3)
- Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
Something I never really paid attention to was how much ... [Go to full review]
Jan 27, 2016
- Verified Purchaser
- Take-Back Reviewer (1 deleted review; avg. rating: 1.0)
- Brand Loyalist (4 of 6 reviews for this brand; avg rating: 5.0)
- Overrepresented Participation (posted 6 reviews)
- Easy Grader (avg. rating: 5.0)
Fail Deleted Reviews
We discovered a total of 91 deleted reviews for this product, with an average rating of 4.8. 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 have no information on reviews that were never published in the first place.
4.8 average rating of deleted reviews
Show distribution of deleted reviews
Fail Brand Repeats
24 of the 324 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.
Fail Suspicious Reviewers
44 of the 324 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
95 of the 324 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.
Fail 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 4.4, while the average ease score for reviewers in this category is 4.3. 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Reviewer Participation
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:
Pass Rating Trend
- Created over 3 days
We counted 324 reviews for this product over the span of 1,167 days, an average of 0.3 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:
Pass Unverified Purchases
14 of the 324 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
- Have an overrepresented word count
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Common Phrases in Reviews:
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Common Phrases in Titles:
13 of the 324 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
Reviewers of this product have ALSO reviewed the following products:
23 of the 324 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 Incentivized Reviews
3 of the 324 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.