Douglas Laboratories

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

Certifications

5 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Nsf Certified For Sport Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source

Violation History

2 incidents
Recall Douglas Labs Stress-B-Plus2024-10-07Source
Prop 65 Lead2008-10-22Source
Products by Douglas Laboratories (showing 10 of 34)
Citrus-Q10™ 100, 60 Tablets
Citrus-Q10™ 100, 60 Tablets
Product 100 Brand 95
N-Acetyl-L-Cysteine, 900 mg, 90 Vegetarian Capsules
N-Acetyl-L-Cysteine, 900 mg, 90 Vegetarian Capsules
Product 100 Brand 95
Corvalen® Ribose Powder, 9.9 oz
Corvalen® Ribose Powder, 9.9 oz
Product 100 Brand 95
Methyl B12 Plus, 90 Lozenges
Methyl B12 Plus, 90 Lozenges
Product 100 Brand 95
Vitamin D, 1000 IU, 100 Tablets
Vitamin D, 1000 IU, 100 Tablets
Product 100 Brand 95
Vitamin K2 Menaquinone-7, 60 Vegetarian Capsules
Vitamin K2 Menaquinone-7, 60 Vegetarian Capsules
Product 100 Brand 95
B-Complex with Metafolin L-5-MTHF, 60 Vegetarian Capsules
B-Complex with Metafolin L-5-MTHF, 60 Vegetarian Capsules
Product 95 Brand 95
L-Tryptophan, 60 Vegetarian Capsules
L-Tryptophan, 60 Vegetarian Capsules
Product 93 Brand 95
Vitamin D, 5000 IU, 100 Tablets
Vitamin D, 5000 IU, 100 Tablets
Product 93 Brand 95
Methyl Folate, 1000 mcg Metafolin, 60 Tablets
Methyl Folate, 1000 mcg Metafolin, 60 Tablets
Product 93 Brand 95
Frequently Asked Questions
Is Douglas Laboratories a trustworthy supplement brand?

Douglas Laboratories receives a brand trust score of 0/100 in GoodSupp's independent analysis. The company was founded in 1955 and is headquartered in Pittsburgh, Pennsylvania, United States. They hold 5 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Certified For Sport, Nsf Gmp, Usda Organic. These certifications are independently verified by GoodSupp and indicate the brand meets recognized quality, purity, and manufacturing standards. Note: Douglas Laboratories has 2 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Is Douglas Laboratories third-party tested?

Yes. Douglas Laboratories holds 5 verified third-party certifications: Consumerlab, Fda Gmp Inspections, Nsf Certified For Sport, Nsf Gmp, Usda Organic. Third-party testing means an independent laboratory — not the supplement company itself — has verified the product's contents, purity, and/or manufacturing practices. This is one of the strongest indicators of supplement quality because it removes the conflict of interest inherent in self-testing. Not all certifications are equal: NSF International and USP are considered the gold standard, while GMP certification indicates proper manufacturing practices.

What are the best Douglas Laboratories supplements?

Based on GoodSupp's quality analysis, the highest-rated Douglas Laboratories supplements are: Citrus-Q10™ 100, 60 Tablets (score: 100/100); N-Acetyl-L-Cysteine, 900 mg, 90 Vegetarian Capsules (score: 100/100); Corvalen® Ribose Powder, 9.9 oz (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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes and check any Douglas Laboratories product.

Download on App Store
Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. 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.