THORNE Vitamin D3 Supplement - Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune Function* - Gluten, Dairy & Soy-Free - 1,000 IU - 90 Capsules
As an Amazon Associate I earn from qualifying purchases.
Review Analysis Results
Analysis Summary
The review set shows moderate authenticity concerns with several suspicious patterns. While many reviews appear genuine with specific details and varied phrasing, there are notable red flags: 5 reviews (33%) are extremely brief (2-3 words), which is common in fake review patterns. The rating distribution is heavily skewed with 14/15 reviews being 5-star (93%), which is unusually high even for quality products. However, several reviews contain authentic elements including specific product details (capsule size, stomach tolerance), personal experiences with different doctors' recommendations, and one 4-star review mentioning a legitimate complaint about empty capsules. The presence of some detailed, nuanced reviews and the single critical review provides some balance against the suspicious brief 5-star reviews.
Review Statistics
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 (4.20 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 (4.93 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.
Share This Analysis
Related Vitamin D Products
![NatureWise Vegan Vitamin D3 5000iu (125 mcg) Organic D3 from Lichen - Supports Immune, Muscle, Bone Health - High Absorption with Organic Cold-Pressed Olive Oil - Non-GMO - 60 Softgels[2-Month Supply]](https://m.media-amazon.com/images/I/71leIKmTPcL.__AC_SX300_SY300_QL70_FMwebp_.jpg)
Quick Links
Learn More About Fake Reviews
12 Signs You Are Reading Fake Amazon Reviews (With Real Examples)
Learn the 12 most reliable warning signs of fake product reviews, each illustrated with a real Grade F product from our database of 85,000+ analyzed Amazon listings.
Safe Amazon Shopping Guide: 7 Steps to Avoid Fake Products
Complete guide to safe Amazon shopping including review analysis, seller verification, price checking, product research strategies, and scam avoidance techniques.
How to Spot Fake Amazon Reviews: 10 Warning Signs in 2025
Learn the telltale signs of fake Amazon reviews including AI-generated text, suspicious timing patterns, generic language, and reviewer behavior red flags. Based on analysis of 40,000+ products.