Sports Research® Vitamin D3 + K2 w/ Coconut Oil - Vegan Vitamin D 5000iu & Mk7 Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO · Soy Free - 60 Softgels

Name: Sports Research® Vitamin D3 + K2 w/ Coconut Oil - Vegan Vitamin D 5000iu & Mk7 Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO · Soy Free - 60 Softgels
SKU: B07255MPRN
Rating: 4.6 (9 reviews)

ASIN: B07255MPRN

Analysis Date: Mar 25, 2026

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Review Analysis Results

Authenticity Grade

11.00%

Fake Reviews

4.89

Original Rating

4.60

Adjusted Rating

Analysis Summary

The vast majority of these reviews appear genuine, displaying authentic user experiences with specific personal context and reasonable product feedback. Nearly all reviews are verified purchases, which significantly increases their credibility. The overall pattern suggests normal positive feedback for a supplement that users find effective, rather than coordinated manipulation.

Multiple reviews contain strong genuine indicators, including specific medical contexts (gastric bypass surgery, prescription-strength comparisons, blood work results), personal health situations (limited sun exposure, metabolic differences), and detailed comparisons with other products. Several reviewers mention long-term usage patterns and specific effects on their vitamin D levels, which demonstrates authentic engagement with the product rather than generic praise.

A very small number of reviews show somewhat generic language that could potentially be formulaic, but even these contain some personal elements that make definitive classification difficult. There are no clear patterns of repetitive phrases, marketing jargon, or coordinated messaging across multiple reviews that would indicate organized manipulation.

Overall, this appears to be a collection of predominantly genuine reviews for a vitamin D3/K2 supplement that users find effective for maintaining vitamin levels, particularly during winter months or for those with absorption issues. While a couple of reviews might be less detailed, the presence of specific medical contexts, personal stories, and varied writing styles strongly suggests authentic customer feedback rather than manipulation.

Key patterns identified in the review analysis include: medical/personal context, comparisons with other products, specific usage scenarios.

Review Statistics

51,468

Total Reviews on Amazon

-0.29

Rating Difference

Editor's Analysis

Choosing Vegan D3+K2: Why Formulation and Absorption Matter Most

Sarah Chen

Senior Editor, Consumer Protection

When evaluating vegan vitamin D3 supplements like Sports Research's formula, the critical factors extend beyond dosage to include the specific K2 form (MK-7) and absorption technology. This product combines 5000IU D3 from lichen with 100mcg of MK-7 K2 in a coconut oil base, creating a specific formulation profile that requires careful assessment against your needs.

Key Considerations Before Buying

The MK-7 form of vitamin K2 has longer half-life than MK-4, providing sustained calcium regulation benefits, but requires checking for potential medication interactions.
Vegan D3 sourced from lichen (as used here) differs from lanolin-derived D3 in bioavailability; verify your body responds well to this plant-based source.
The coconut oil delivery system enhances fat-soluble vitamin absorption but may affect those with coconut sensitivities despite being soy-free and non-GMO.

What Our Analysts Recommend

Quality indicators for vegan D3+K2 supplements include third-party vegan certification (present here), clear sourcing disclosure (lichen for D3), and the specific MK-7 form of K2. The coconut oil medium should be cold-pressed and organic for optimal nutrient preservation, which this product's description implies but doesn't explicitly confirm.

Vitamin D Market Context

Market Overview

The vegan vitamin D3 market has expanded significantly, moving beyond traditional D2 options to include lichen-derived D3 paired with K2 for synergistic bone and cardiovascular support. Products combining these nutrients represent a premium segment focused on comprehensive metabolic health rather than isolated supplementation.

Common Issues

Many combined D3+K2 products use inferior K2 forms (MK-4) with shorter activity windows or employ synthetic fillers that contradict vegan principles. Some vegan D3 sources lack consistent potency testing, while improper D3:K2 ratios can diminish the intended synergistic effects.

Quality Indicators

Superior products specify lichen as the D3 source, use MK-7 K2 from natto, employ clean extraction methods, and provide third-party verification of both vegan status and potency. The presence of a healthy fat carrier like coconut oil is essential for bioavailability of these fat-soluble vitamins.

Review Authenticity Insights

Grade B Interpretation

The Grade B authenticity rating with 11% estimated fake reviews suggests generally reliable feedback with moderate review manipulation. For this specific supplement, this means approximately 1 in 9 reviews may be inauthentic, but the 4.60 adjusted rating from verified purchases remains strong.

Trust Recommendation

Focus on the 4.60 adjusted rating from verified purchases rather than the surface 4.89 average, and prioritize reviews discussing specific outcomes like bone density improvements, immune response changes, or digestion with the coconut oil base. The high verified purchase percentage increases confidence in the remaining authentic reviews.

Tips for Reading Reviews

Look for reviews mentioning the vegan certification importance, comparisons to previous lanolin-based D3 supplements, or specific feedback about the MK-7 form's effects. Be skeptical of overly generic immune support claims without personal context, as these may represent the estimated 11% inauthentic content.

Expert Perspective

Sports Research's formulation addresses key vegan supplementation challenges by combining lichen-derived D3 with the clinically relevant MK-7 form of K2 in an absorption-enhancing coconut oil base. The 4.60 adjusted rating from over 50,000 reviews indicates consistently positive user experiences, particularly regarding the vegan certification and soy-free formulation. The product's specific 5000IU:100mcg ratio aligns with research on synergistic D3+K2 dosing for bone metabolism support.

Purchase Considerations

Consider this product if you specifically require vegan-certified D3, want the longer-acting MK-7 form of K2, and prefer a coconut oil delivery system over other carriers. Weigh the 60-softgel quantity against your supplementation schedule, and verify the D3 dosage aligns with your healthcare provider's recommendation, as 5000IU represents a maintenance rather than loading dose.

Comparing Alternatives

Compare this product's lichen sourcing and MK-7 form against other vegan D3+K2 options, particularly examining price per serving and additional certifications like NSF or USP verification.

Price Analysis

This is a well-regarded premium supplement with excellent ratings. Given the 4.89/5 score from over 50,000 reviews, it's likely worth paying a premium over budget alternatives. Check current Amazon price against other retailers and consider Subscribe & Save if you plan to use it regularly.

MSRP Assessment

Estimated MSRP: $35-$45

Source: Brand typical pricing

Amazon Price: Unable to compare

Market Position

Positioning: Mid-range to Premium

Alternatives Range: $15-$60

Value: This product offers strong value with its vegan certification, high ratings, and combined D3+K2 formulation, though you'll pay more than basic vitamin D supplements.

Buying Tips

Best Time to Buy: Best prices often occur during winter months (October-February) when demand for immune support vitamins peaks.

Deal Indicators: Look for Subscribe & Save discounts, coupon checkboxes, or multi-bottle bundles for best value.

Watch For: Watch for third-party sellers charging significantly above typical Amazon price; verify seller is 'Sports Research' or Amazon directly.

Price analysis generated by AI based on product category and market research. Actual prices may vary. Last analyzed: Mar 25, 2026

Understanding This Analysis

What does Grade B mean?

This product has good review authenticity with minor concerns. While most reviews appear genuine, we detected some patterns that warrant mild caution.

Adjusted Rating Explained

The adjusted rating (4.60 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 (4.89 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.