Grade: B

MEDIUM RISK

Dr. Mercola

Item: Dr. Mercola
Rating: 60
Author: SupplementChecker

https://www.mercolamarket.com Est. 2001 (25 years)

Dr. Mercola has a SupplementChecker.co trust score of 60/100, which is a Grade B and indicates MEDIUM risk. Dr. Mercola is GMP Certified, but our researchers found no evidence that Dr. Mercola products are third-party tested. Consumers should be aware of this when considering Dr. Mercola products.

Dr. Mercola Trust Summary

Trust Score: 60/100 (Above Average)
Grade: B
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 5
Years in Business: 25 years
GMP Certified: Yes

Dr. Mercola has a trust score of 60/100 (Above Average). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and 5 adverse event reports and has been in business for 25 years.

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Red Flags

⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 2001 (25 years)

Certifications

GMP Certified

GMP certification ensures manufacturing quality standards are met, but does not verify that product contents match the label through independent testing. Look for NSF, USP, or Informed Sport certifications for third-party verified products.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Is Dr. Mercola Third-Party Tested?

No — Dr. Mercola is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do hold GMP certification, which ensures manufacturing quality but does not independently verify product contents. We recommend looking for brands with verified third-party testing for the highest confidence in product quality. See our guide to third-party tested supplements.

Is Dr. Mercola a Good Brand?

Dr. Mercola scores 60/100 (B) — this is an average score. There may be room for improvement in testing transparency or certifications. Dr. Mercola has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Dr. Mercola

Dr. Mercola is a supplement brand founded in 2001. Operating independently, Dr. Mercola offers a range of health and wellness products. The brand is headquartered in the US.

Product Specialization

Dr. Mercola specializes in vitamins, probiotics, and specialty supplements. Their product line includes a variety of formulations targeting different health needs.

Testing & Certifications Explained

Dr. Mercola is GMP Certified, which means the manufacturing facility adheres to Good Manufacturing Practices as defined by regulators. GMP certification ensures products are consistently produced and controlled according to quality standards. However, SupplementChecker.co found no evidence that Dr. Mercola is third-party tested. Third-party testing provides an additional layer of independent verification of product contents and purity.

How Dr. Mercola Compares

Many brands in the vitamin and supplement space, such as Thorne Research (trust score 92/100) and Klean Athlete (trust score 88/100), undergo rigorous third-party testing and have higher trust scores than Dr. Mercola. Other brands like NOW Foods (trust score 75/100) also prioritize transparency, although "is Dr. Mercola third-party tested" is a common question from consumers.

Buying Guidance

Consumers should purchase Dr. Mercola products directly from the manufacturer or authorized retailers to ensure authenticity. Given that Dr. Mercola does not appear to conduct third-party testing, consumers should carefully evaluate product claims and consider consulting with a healthcare professional before use. Before purchasing, read "Dr. Mercola reviews" from multiple sources.

Frequently Asked Questions

Has Dr. Mercola had any recalls?

No — as of 2026, Dr. Mercola has zero FDA product recalls on record. Dr. Mercola received a trust score of 60/100 from SupplementChecker.

Are Dr. Mercola supplements third-party tested?

No — Dr. Mercola supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do have GMP (Good Manufacturing Practice) certification, which ensures manufacturing quality but does not independently verify product contents.

Is Dr. Mercola safe?

Dr. Mercola received a trust score of 60/100 (grade: B, risk level: MEDIUM). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Is Dr. Mercola a good brand?

Dr. Mercola scores 60/100 (grade: B) — this is an average score. There may be room for improvement in testing transparency or certifications. They do not currently hold third-party testing certifications like NSF, USP, or Informed Sport. No FDA warnings or recalls found.

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How We Calculated This Score

Every brand starts with a baseline score of 70/100.

Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean regulatory record (+10), 10+ years in business (+10), organic certification (+5).

Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).

Score is capped at 0-100. Grade and risk level are derived from the final score.

All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 4/9/2026.

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