Grade: B+

LOW RISK

P.K. Douglass

Item: P.K. Douglass
Rating: 75
Author: SupplementChecker

P.K. Douglass has a SupplementChecker.co trust score of 75/100, a grade of B+, indicating a LOW risk level. P.K. Douglass claims to conduct third-party testing, though no specific certifications are visible. While the brand has a clean FDA record, they lack transparency in lab result publication and ingredient sourcing.

P.K. Douglass Trust Summary

Trust Score: 75/100 (Good)
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes (self-reported)
FDA Recalls: 0
Adverse Events: 0

P.K. Douglass has a trust score of 75/100 (Good). The brand is claims third-party testing (self-reported), has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No GMP certification visible

Verified Strengths

✓Claims third-party testing
✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

Third-Party Tested

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

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is P.K. Douglass Third-Party Tested?

Yes — P.K. Douglass is Third-party tested. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.

Is P.K. Douglass a Good Brand?

P.K. Douglass scores 75/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. P.K. Douglass has a clean FDA record with no warnings or recalls. The brand holds third-party certifications (Third-party tested), which is a strong quality indicator.

About P.K. Douglass

P.K. Douglass is an independent supplement brand operating in the US. The founding date of P.K. Douglass is unknown. They focus on developing and marketing specialty supplements.

Product Specialization

P.K. Douglass specializes in the 'specialty' category of supplements. Specific product types are not specified.

Testing & Certifications Explained

P.K. Douglass claims their products are third-party tested, but they do not specify which third-party certifications they use. This means that while they claim to test their products, there is no independent verification of these claims. Consumers should seek further information from P.K. Douglass regarding their testing protocols to ensure the products meet their standards.

How P.K. Douglass Compares

Compared to competitors in the specialty supplement space, P.K. Douglass's trust score of 75/100 places them in the mid-range. For example, a brand with verifiable NSF certification and a higher trust score might offer greater assurance of product quality. Consumers should compare P.K. Douglass reviews with those of brands like Thorne Research or NOW Foods, which often have higher trust scores and more transparent testing practices.

Buying Guidance

Consumers interested in P.K. Douglass products should verify the third-party testing claims by contacting the company directly and requesting detailed information about their testing procedures. Purchase from reputable retailers to ensure product authenticity. Consider whether the lack of published lab results and ingredient sourcing information aligns with your personal standards for supplement transparency.

Frequently Asked Questions

Has P.K. Douglass had any recalls?

No — as of 2026, P.K. Douglass has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. P.K. Douglass received a trust score of 75/100 from SupplementChecker.

Are P.K. Douglass supplements third-party tested?

Yes — P.K. Douglass supplements are third-party tested. They hold the following certifications: third-party tested (self-reported). Third-party testing means an independent lab has verified the product's contents, purity, and potency match the label claims.

Is P.K. Douglass safe?

P.K. Douglass received a trust score of 75/100 (grade: B+, risk level: LOW). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Grade A+ • Higher score

Want more comparisons? Browse our supplement categories or check our buying guides.

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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Quick Facts

Trust Score: 75/100
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes
FDA Recalls: 0
Adverse Reports: 0

⚠ No GMP certification visible