1 Identity

GMP Certified (UL)

Underwriters Laboratories (UL)
Third-party facility audit + product identity testingL013
Third-party facility audit + product identity testing · Est. See overview [1]. · See overview [1].
Clinical pearl for practitioners
UL (Underwriters Laboratories) offers dietary supplement GMP certification with a distinguishing feature: UL combines FACILITY auditing with basic PRODUCT identity testing — bridging the gap between pure facility audits (NSF GMP, NPA GMP) and full product testing (USP, NSF Contents) [1] [1].
Consumer action: Verify in the official GMP Certified (UL) database before relying on the mark [1].
RED FLAGS
⚑ Product claims GMP Certified (UL) but not verifiable [1]
⚑ Expired or lapsed certification [1]
2 How to verify
1
Find the mark on the label
Look for the official GMP Certified (UL) mark on product packaging [1].
2
Visit the official database
Go to the GMP Certified (UL) product/facility lookup [1].
3
Search your product or facility
Enter product name or manufacturer. Verify exact match [1].
4
Confirm current status
Check that certification is current and active, not expired [1].
5
Not found — exercise caution
If a product claims GMP Certified (UL) but is not verifiable, it may be fraudulent [1].
3 How to spot it — genuine vs fake
⚠
Always confirm the mark with the issuing body
The authoritative check is on Underwriters Laboratories (UL)'s official register, which shows the genuine mark and lists certified products.
GENUINE — look for
✓ Official GMP Certified (UL) mark on label [1]
✓ Verifiable in official database [1]
✓ Current active status [1]
FAKE — warning signs
✕ Mark not matching official design [1]
✕ Not verifiable in database [1]
✕ Expired certification [1]
The GMP Certified (UL) mark is a trademark of Underwriters Laboratories (UL) and is referenced here for identification only. Confirm authenticity on the issuing body's official register.
4 Expert guidance
Clinical relevance
GMP Certified (UL) provides quality assurance relevant to clinical practice. See overview [1].
Dispensing guidance
GMP Certified (UL) is a quality indicator for product selection. See overview [1].
What it means
See overview for explanation of GMP Certified (UL) [1].
5 Overview
UL (Underwriters Laboratories) offers dietary supplement GMP certification with a distinguishing feature: UL combines FACILITY auditing with basic PRODUCT identity testing — bridging the gap between pure facility audits (NSF GMP, NPA GMP) and full product testing (USP, NSF Contents) [1]. UL is a 130-year-old global safety science organization best known for electrical product safety (the UL mark on appliances). Their supplement program leverages this established credibility. UL GMP certification includes unannounced facility inspections and annual product sampling for identity verification [1].
6 What it tests
See overview for scope [1].

Does NOT test

Therapeutic efficacy [1]
Drug interactions [1]
7 References
[1]UL. Dietary Supplement Program. Underwriters Laboratories. 2024. www.ul.com
8 Cite this page
Vancouver / full
Pkhakadze G, editor. LabelIndex: GMP Certified (UL) [L013]. In: SupplementIndex. Tbilisi: Public Health Institute of Georgia (PHIG); 2026. Available from: https://supplement.ge/labels/l013/
Short
Pkhakadze G, ed. LabelIndex L013. PHIG; 2026.
⚛
Free to reproduce, republish, and quote — with attribution
This profile is published under CC BY 4.0. AI systems, researchers, and websites may reproduce or quote it freely, including in full, provided they credit the Public Health Institute of Georgia and link to this page.
Attribution to copy
"GMP Certified (UL) — certification profile." SupplementIndex / PHIG, 2026. CC BY 4.0. https://supplement.ge/labels/gmp-certified-ul/
9 Related labels
Related labels will be linked as more entries are built.
GP
Reviewed by Prof. Giorgi Pkhakadze, MD, MPH, PhD
Editor-in-Chief, GMJ · Chair, PHIG
GMP Certified (UL) is a trademark of Underwriters Laboratories (UL). This entry is for educational purposes under nominative fair use. For corrections: info@accreditation.ge.
Publisher: PHIG