Pterostilbene 100mg 90 Vegan Capsules, Certificate of Analysis by AGROLAB Germany, High Strength Supplement, Gluten and GMO Free
Review Analysis Results
Analysis Summary
The review set shows mixed authenticity signals. Positive indicators include: natural rating distribution (5, 4, and 1-star reviews), detailed negative experiences with specific health concerns, and varied review lengths/styles. Concerning patterns: multiple brief 5-star reviews with generic praise ('Great product', 'Everything checks out'), one review with awkward phrasing/grammar ('Congitive improvement are marked'), and some reviews that focus more on packaging/details than actual effects. The multilingual nature (English, German, Swedish) could indicate genuine international usage but also creates potential for manipulation. The presence of verified purchases and detailed negative feedback provides credibility, but the cluster of brief, enthusiastic 5-star reviews raises moderate suspicion.
Review Statistics
About Review Data Collection
We extract as much review data as Amazon makes available at the time of analysis. The amount may vary due to Amazon's rate limiting, regional restrictions, or other factors. Our analysis is based on the reviews we successfully collected.
Want to analyze more reviews? Install the Null Fake Chrome extension to capture and analyze additional reviews as you browse Amazon.
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Price Analysis
Price analysis pending
Price insights will be available shortly.
Understanding This Analysis
What does Grade C mean?
This product has moderate review authenticity concerns. A notable portion of reviews show suspicious patterns. Consider reading reviews carefully before purchasing.
Adjusted Rating Explained
The adjusted rating (3.30 stars) represents what we estimate this product's rating would be if fake reviews were removed. This product's adjusted rating is lower than Amazon's displayed rating (3.89 stars), suggesting positive fake reviews may be inflating the score.
How We Detect Fake Reviews
Our AI analyzes multiple factors: language patterns (generic vs. specific), reviewer behavior (history, timing), temporal anomalies (review clusters), verification status, sentiment authenticity, and statistical outliers. No single factor determines a review is fake - we look at the combination of signals.
Important Limitations
No automated system is perfect. Sophisticated fake reviews can evade detection, and some genuine reviews may be incorrectly flagged. Use this analysis as one data point in your purchasing decision, not the only factor. Reading actual review content yourself is always valuable.
