Grade: B+

MEDIUM RISK

Douglas Laboratories

Item: Douglas Laboratories
Rating: 70
Author: SupplementChecker

Part of Nestle Health Science

https://www.douglaslabs.com Est. 1955 (71 years)

Douglas Laboratories has a SupplementChecker.co trust score of 70/100, which is a grade of B+ and indicates MEDIUM risk. Douglas Laboratories is NSF Certified for Sport, indicating the products are tested for banned substances. While an established brand, consumers should be aware of 2 product recall(s) on record.

Douglas Laboratories Trust Summary

Trust Score: 70/100 (Good)
Grade: B+
Risk Level: MEDIUM
Third-Party Tested: Yes (NSF)
Recalls: 2
Adverse Events: 0
Years in Business: 71 years
GMP Certified: Yes

Douglas Laboratories has a trust score of 70/100 (Good). The brand is third-party tested by NSF, has 2 Health Canada recalls on record and no adverse event reports and has been in business for 71 years.

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Red Flags

⚠2 product recall(s) on record

Verified Strengths

✓NSF Certified for Sport — banned substance tested
✓Established brand — operating since 1955 (71 years)

Certifications

NSF CertifiedGMP CertifiedThird-Party Tested

Third-party testing means an independent laboratory has verified this product's contents, purity, and potency match what's on the label.

Regulatory Record

FDA Warning Letters

Recalls

Adverse Reports

Recall History

Recalled by Health Canada Oct 10, 2024

Stress-B-Plus Tablet: Contains Niacin instead of Niacinamide
Recalled by Health Canada Apr 12, 2015

Ultra D-Tox (2015-04-13)

Is Douglas Laboratories Third-Party Tested?

Yes — Douglas Laboratories is NSF-certified. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims. They also maintain GMP (Good Manufacturing Practice) certification.

Is Douglas Laboratories a Good Brand?

Douglas Laboratories scores 70/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Note: 2 product recall(s) are on record, which impacts the overall trust assessment. The brand holds third-party certifications (NSF-certified), which is a strong quality indicator.

About Douglas Laboratories

Douglas Laboratories, founded in 1955, has been in business for 71 years. It is currently owned by parent company Nestle Health Science. Douglas Laboratories is a US-based company that develops and manufactures a range of nutritional supplements.

Product Specialization

Douglas Laboratories specializes in vitamins, minerals, and specialty supplements. They offer a wide array of products, including multivitamins, single-ingredient vitamins and minerals, and condition-specific formulas.

Testing & Certifications Explained

Douglas Laboratories carries NSF Certified for Sport certification. This means that certain Douglas Laboratories products have been tested by NSF International, an independent organization, to ensure they do not contain unsafe levels of contaminants, prohibited substances or masking agents. This certification is particularly important for athletes and others concerned about banned substances.

How Douglas Laboratories Compares

Compared to competitors, Douglas Laboratories' trust score of 70/100 places it in the mid-range. For example, Thorne Research, a competitor in the vitamins and minerals space, has a higher trust score and publishes lab results. Another competitor, Pure Encapsulations, also generally scores higher and is known for its rigorous testing protocols. Whether Douglas Laboratories is a good brand compared to these alternatives depends on the consumer's priorities.

Buying Guidance

Consumers can purchase Douglas Laboratories products from various online retailers and healthcare practitioners. Given the brand's trust score and recall history, it is advisable to purchase from reputable sources and carefully review product labels and certifications before use. Look for the NSF Certified for Sport logo to ensure products have undergone banned substance testing.

Frequently Asked Questions

Has Douglas Laboratories had any recalls?

Yes — as of 2026, Douglas Laboratories has 2 Health Canada product recall(s) on record. Douglas Laboratories received a trust score of 70/100 from SupplementChecker.

Are Douglas Laboratories supplements third-party tested?

Yes — Douglas Laboratories supplements are third-party tested. They hold the following certifications: NSF Certified for Sport. Third-party testing means an independent lab has verified the product's contents, purity, and potency match the label claims.

Is Douglas Laboratories safe?

Douglas Laboratories received a trust score of 70/100 (grade: B+, risk level: MEDIUM). This score is calculated from regulatory records (FDA and Health Canada), third-party certifications, adverse event reports, and transparency practices. Note: 2 product recall(s) are on record.

Is Douglas Laboratories a good brand?

Douglas Laboratories scores 70/100 (grade: B+) — this is an average score. There may be room for improvement in testing transparency or certifications. They hold third-party certifications (NSF-certified), which is a strong indicator of product quality. Note: 2 recall(s) are on record.

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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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