What percentage of reviews are fake for this product?

30.00% of the analyzed reviews appear to be fake or inauthentic.

What is the authenticity grade for this product?

The product receives a grade of C based on review authenticity analysis.

How many reviews were analyzed?

150 reviews were analyzed for authenticity patterns.

What is the adjusted rating after removing fake reviews?

After removing suspicious reviews, the adjusted rating is 4.29 out of 5 stars.

How does this analysis help consumers?

This analysis helps consumers identify products with manipulated reviews, enabling more informed purchasing decisions based on genuine customer feedback.

Is this product priced fairly on Amazon?

Based on AI price analysis, this product is Unable to compare.

How is this product positioned in the market?

This product is positioned as a Mid-range option in its category.

Nutricost N-Acetyl L-Cysteine (NAC) 600mg, 180 Capsules - Non-GMO, Gluten Free

Name: Nutricost N-Acetyl L-Cysteine (NAC) 600mg, 180 Capsules - Non-GMO, Gluten Free
Brand: Amazon
SKU: B01CUQFKW4
Availability: InStock
Rating: 4.3 (150 reviews)

ASIN: B01CUQFKW4

Analysis Date: Aug 6, 2025

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Review Analysis Results

Authenticity Grade

30.00%

Fake Reviews

4.50

Original Rating

4.29

Adjusted Rating

Analysis Summary

Analysis of 150 reviews found 45 potentially fake reviews (30%). This product has moderate fake review activity. Exercise some caution.

Review Statistics

10,756

Total Reviews on Amazon

-0.21

Rating Difference

Price Analysis

Nutricost NAC appears to be a well-reviewed mid-range supplement with strong market validation. Check current Amazon pricing against the $18-$45 typical range for 180 capsules, and use Subscribe & Save for the best recurring value. Given the high review count, this product represents a reliable choice if priced competitively within its category.

MSRP Assessment

Estimated MSRP: Unknown

Source: Unable to determine

Amazon Price: Unable to compare

Market Position

Positioning: Mid-range

Alternatives Range: $18-$45 for 180 capsules of 600mg NAC

Value: With 4.5/5 from 10,756 reviews, this product offers strong consumer validation at a competitive price point for a mid-tier supplement.

Buying Tips

Best Time to Buy: Supplement prices often drop during January (New Year's resolutions) and September (back-to-school wellness focus).

Deal Indicators: Look for Subscribe & Save discounts (typically 5-15% off), coupon checkboxes on the product page, or bundled offers with other wellness supplements.

Watch For: Watch for third-party sellers charging significantly more than Nutricost's direct Amazon price; verify seller is 'Nutricost' or 'Amazon.com' for best pricing.

Price analysis generated by AI based on product category and market research. Actual prices may vary. Last analyzed: Jan 23, 2026

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 (4.29 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 (4.50 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.