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Douglas Laboratories

Founded 1955 · Pittsburgh, Pennsylvania, United States · 32 products · douglaslabs.com

What We Researched

GoodSupp reviewed 9 sources for Douglas Laboratories. The evidence below covers testing publisher listings, company statements or public records found during that review.

1231 products in the catalog · Last checked:

We checked company information, testing publishers, certification directories and public regulatory records.

Public evidence for Douglas Laboratories
SourceFindings
ConsumerLabConsumerLab's public Tested Brands table lists Douglas Laboratories with 1 tested product. Approval and Top Pick outcomes are masked behind membership and were not inferred.
Health Canada LNHPDHealth Canada lists 6 product records for Douglas Laboratories. Sample registry row: 80120479 — Douglas Laboratories Prenatal — Active. Registry inclusion is product/entity scoped and does not establish independent testing.

Company statements are identified as claims. Publisher listings and regulatory records apply to the products, facilities and dates described. A missing public listing does not establish that testing never occurred.

100
Brand Score

Certifications

6 certifications
Consumerlab Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Nsf Certified For Sport Source available Primary evidence
Nsf Gmp Source available Primary evidence
Usda Organic Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency Claims

5 claims
Third Party Testing Claim — Evidence available Evidence
Coa Availability — Evidence available Evidence
In House Testing — Evidence available Evidence
Testing Lab Disclosure — Brand claim; evidence unavailable

Violation History

2 incidents
Recall Douglas Labs Stress-B-Plus2024-10-07 Source available Primary source
Prop 65 Lead2008-10-22 Source available Primary source
Products by Douglas Laboratories (showing 100 of 168)
L-Methionine
L-Methionine
Product 100 Brand 100
L-Methionine
L-Methionine
Product 100 Brand 100
Bilberry Max-V
Bilberry Max-V
Product 100 Brand 100
L-Phenylalanine 500 mg
L-Phenylalanine 500 mg
Product 100 Brand 100
Chromium-GTF 200 ChromeMate
Chromium-GTF 200 ChromeMate
Product 100 Brand 100
L-Cysteine 500 mg
L-Cysteine 500 mg
Product 100 Brand 100
Opti-EPA 500
Opti-EPA 500
Product 100 Brand 100
American Ginseng-V
American Ginseng-V
Product 100 Brand 100
Hypo-Selenium 200 mcg
Hypo-Selenium 200 mcg
Product 100 Brand 100
PABA 500 mg
PABA 500 mg
Product 100 Brand 100
Max-Carnitine 500 mg
Max-Carnitine 500 mg
Product 100 Brand 100
Alpha-GPC
Alpha-GPC
Product 100 Brand 100
N-Acetyl-L-Cysteine 600 mg
N-Acetyl-L-Cysteine 600 mg
Product 100 Brand 100
Ayur-Gymnema
Ayur-Gymnema
Product 100 Brand 100
Natural Vitamin E 200 IU
Natural Vitamin E 200 IU
Product 100 Brand 100
Ayur-Coleus Forskohlii
Ayur-Coleus Forskohlii
Product 100 Brand 100
Seleno-Methionine
Seleno-Methionine
Product 100 Brand 100
Hesperidin Methyl Chalcone
Hesperidin Methyl Chalcone
Product 100 Brand 100
PQQ Plus
PQQ Plus
Product 100 Brand 100
L-Tyrosine 500 mg
L-Tyrosine 500 mg
Product 100 Brand 100
L-Threonine 500 mg
L-Threonine 500 mg
Product 100 Brand 100
Estroflavone
Estroflavone
Product 100 Brand 100
Pantethine
Pantethine
Product 100 Brand 100
Zinc Picolinate
Zinc Picolinate
Product 100 Brand 100
Seleno-Methionine
Seleno-Methionine
Product 100 Brand 100
Salmon Oil
Salmon Oil
Product 100 Brand 100
Opti-EPA 500
Opti-EPA 500
Product 100 Brand 100
Selenium Chelate 50 mcg
Selenium Chelate 50 mcg
Product 100 Brand 100
M.C.T
M.C.T
Product 100 Brand 100
Zinc Picolinate
Zinc Picolinate
Product 100 Brand 100
Molybdenum
Molybdenum
Product 100 Brand 100
Olive Leaf Extract
Olive Leaf Extract
Product 100 Brand 100
Amino-Mag 200
Amino-Mag 200
Product 100 Brand 100
Zinc Lozenges Natural Orange Flavor
Zinc Lozenges Natural Orange Flavor
Product 100 Brand 100
Riboflavin
Riboflavin
Product 100 Brand 100
DL-Pheine
DL-Pheine
Product 100 Brand 100
Chromium-GTF 200 ChromeMate
Chromium-GTF 200 ChromeMate
Product 100 Brand 100
L-Tyrosine
L-Tyrosine
Product 100 Brand 100
Mag-Tea G
Mag-Tea G
Product 100 Brand 100
Hypo-Selenium 200 mcg
Hypo-Selenium 200 mcg
Product 100 Brand 100
Molybdenum 500 mcg
Molybdenum 500 mcg
Product 100 Brand 100
Boron Plus
Boron Plus
Product 100 Brand 100
L-Proline 500 mg
L-Proline 500 mg
Product 100 Brand 100
L-Tyrosine 500 mg
L-Tyrosine 500 mg
Product 100 Brand 100
Vitamin B-5 250 mg
Vitamin B-5 250 mg
Product 100 Brand 100
Phosphatidyl-Serine Capsules
Phosphatidyl-Serine Capsules
Product 100 Brand 100
Zinc Lozenges Natural Orange Flavor
Zinc Lozenges Natural Orange Flavor
Product 100 Brand 100
Benji Koji RYR
Benji Koji RYR
Product 100 Brand 100
Opti-Sel
Opti-Sel
Product 100 Brand 100
Taurine
Taurine
Product 100 Brand 100
Boron
Boron
Product 100 Brand 100
L-Theanine
L-Theanine
Product 100 Brand 100
CoQmelt Coenzyme Q10 100 mg Orange Flavored
CoQmelt Coenzyme Q10 100 mg Orange Flavored
Product 100 Brand 100
Hypo-Selenium 200 mcg
Hypo-Selenium 200 mcg
Product 100 Brand 100
Pycnogenol
Pycnogenol
Product 100 Brand 100
Chromium 200 mcg
Chromium 200 mcg
Product 100 Brand 100
Standardized Black Cohosh
Standardized Black Cohosh
Product 100 Brand 100
Seleno-Methionine
Seleno-Methionine
Product 100 Brand 100
Liquid Vitamin D3
Liquid Vitamin D3
Product 100 Brand 100
Pycnogenol
Pycnogenol
Product 100 Brand 100
Ayur-Ashwagandha
Ayur-Ashwagandha
Product 100 Brand 100
Olive Leaf Extract
Olive Leaf Extract
Product 100 Brand 100
Vitamin A
Vitamin A
Product 100 Brand 100
Pycnogenol
Pycnogenol
Product 100 Brand 100
Chromium 400 mcg
Chromium 400 mcg
Product 100 Brand 100
N-Acetyl-L-Cysteine 750 mg
N-Acetyl-L-Cysteine 750 mg
Product 100 Brand 100
CoQ-loz 100 Natural Orange Flavored Coenzyme Q10 100 mg
CoQ-loz 100 Natural Orange Flavored Coenzyme Q10 100 mg
Product 100 Brand 100
CoQ-loz 300 Natural Orange Flavored Coenzyme Q10 300 mg
CoQ-loz 300 Natural Orange Flavored Coenzyme Q10 300 mg
Product 100 Brand 100
Liquid Magnesium Natural Pomegranate Flavor
Liquid Magnesium Natural Pomegranate Flavor
Product 100 Brand 100
Chromium-GTF 200 ChromeMate
Chromium-GTF 200 ChromeMate
Product 100 Brand 100
Aler-Gest
Aler-Gest
Product 100 Brand 100
Opti-Zinc 30
Opti-Zinc 30
Product 100 Brand 100
Chromium Picolinate 250 mcg
Chromium Picolinate 250 mcg
Product 100 Brand 100
Riboflavin-5-Phosphate
Riboflavin-5-Phosphate
Product 100 Brand 100
Resveratrol
Resveratrol
Product 100 Brand 100
Taurine
Taurine
Product 100 Brand 100
OptiZinc 30
OptiZinc 30
Product 100 Brand 100
Vitamin K2
Vitamin K2
Product 100 Brand 100
Standardized Black Cohosh
Standardized Black Cohosh
Product 100 Brand 100
L-Serine 500 mg
L-Serine 500 mg
Product 100 Brand 100
L-Taurine 500 mg
L-Taurine 500 mg
Product 100 Brand 100
Beni Koji RYR Red Yeast Rice
Beni Koji RYR Red Yeast Rice
Product 100 Brand 100
Citrus-Q10™ 100
Citrus-Q10™ 100
Product 100 Brand 100
N-Acetyl-L-Cysteine 900 mg 90 Vegetarian Capsules
N-Acetyl-L-Cysteine 900 mg 90 Vegetarian Capsules
Product 100 Brand 100
Corvalen® Ribose Powder
Corvalen® Ribose Powder
Product 100 Brand 100
Methyl B12 Plus
Methyl B12 Plus
Product 100 Brand 100
Vitamin D, 1000 IU
Vitamin D, 1000 IU
Product 100 Brand 100
Vitamin K2 Menaquinone-7
Vitamin K2 Menaquinone-7
Product 100 Brand 100
Nia-Chrome
Nia-Chrome
Product 97 Brand 100
Selenium + Vitamin E
Selenium + Vitamin E
Product 96 Brand 100
Selenium + Vitamin E 50 mcg, 400 IU
Selenium + Vitamin E 50 mcg, 400 IU
Product 96 Brand 100
Vitamin E
Vitamin E
Product 96 Brand 100
Selenium + Vitamin E 50 mcg, 400 IU
Selenium + Vitamin E 50 mcg, 400 IU
Product 96 Brand 100
Sel-E-Chrom
Sel-E-Chrom
Product 95 Brand 100
Nutri-E 400
Nutri-E 400
Product 95 Brand 100
Sel-E-Chrom
Sel-E-Chrom
Product 95 Brand 100
Nutri-E 400
Nutri-E 400
Product 95 Brand 100
De-Metox (DL-Methionine)
De-Metox (DL-Methionine)
Product 95 Brand 100
Sleep Formula
Sleep Formula
Product 95 Brand 100
Pyruvate - F.R.I
Pyruvate - F.R.I
Product 95 Brand 100
More from Douglas Laboratories (showing 24 of 1231)

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Frequently Asked Questions
What testing evidence is available for Douglas Laboratories?

The September 3, 2026 review found public listings from ConsumerLab. The evidence table identifies the products or company listings covered. A publisher listing does not mean every product has passed testing.

What are the best Douglas Laboratories supplements?

Based on GoodSupp's quality analysis, the highest-rated Douglas Laboratories supplements are: L-Methionine (score: 100/100); L-Methionine (score: 100/100); Bilberry Max-V (score: 100/100). These scores are calculated from ingredient quality, dosage adequacy, bioavailability, label transparency, and inactive ingredient safety. Scores can vary significantly across a brand's product line — a high brand trust score doesn't guarantee every individual product is top-quality.

Where is Douglas Laboratories located?

Douglas Laboratories is headquartered in Pittsburgh, Pennsylvania, United States. The company was founded in 1955. They currently offer 32 products in their supplement lineup. Their official website is douglaslabs.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.