Quality & Testing Standards | Terry Naturally®

At Terry Naturally®, quality is the foundation of everything we do. From the moment we select an ingredient to the day a product reaches your hands, every step is guided by rigorous science, exacting standards, and an unwavering commitment to your health. We believe that when you invest in your health, you deserve to know exactly what you’re getting.

Our quality promise

Built on science. Held to the highest standard.

The Terry Naturally® brand was developed to make a lasting difference in your health. That means combining nature's most powerful ingredients with the kind of extensive research and quality controls that give you real confidence in every product you take.

Triple-tested quality

Verified every step of the way

Our products undergo rigorous testing at three critical stages, so there are no surprises from sourcing to finished product.

Test 1: Raw materials

Every raw material is verified for authenticity and appropriate levels of beneficial compounds before it ever enters a formula. Many of our key ingredients are backed by published clinical research and held to standards that go well beyond industry norms.

Test 2: Formulations

We ensure every formula is stable, properly blended, and optimally bioavailable— whether it's a capsule, tablet, chewable, liquid, or drink mix. A formula that isn't stable or properly dispersed can't deliver results—ours are built to.

Test 3: Finished products

After manufacturing, every finished product is independently tested for accurate ingredient contents, safety, and stability—confirming what's on the label is exactly what's in the package.

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Independent testing

Third-party verified. No exceptions.

All Terry Naturally products are rigorously tested by independent, ISO-certified, third-party laboratories—including Eurofins, one of the world's largest and most trusted life sciences testing networks, with over 900 laboratories in 62 countries and nearly 100 years of testing expertise.

Identity: High-Performance Thin Layer Chromatography (HPTLC)
Strength: High-Performance Liquid Chromatography (HPLC), Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Gas Chromatography (GC)
Purity: United States Pharmacopeia (USP) methods for microbiology
Composition: USP methods for residual solvents, pesticides, and heavy metals
Stability: International Council for Harmonisation (ICH) guidelines for stability

Manufacturing standards

Third party certified. cGMP-compliant.

Terry Naturally products are manufactured in full compliance with Current Good Manufacturing Practices (cGMPs) as set forth by the FDA in the Code of Federal Regulations Title 21 (CFR21).

Our adherence to cGMPs covers every aspect of production: raw materials, formulation, labeling, storage, and shipping. In addition to FDA oversight, our manufacturing facilities are audited by independent third-party organizations including NSF International, the Global Retailer and Manufacturer Alliance (GRMA), and Underwriters Laboratories (UL).

Scientific affiliations & memberships

Rooted in the scientific community

Quality begins long before manufacturing. It starts with who we learn from, collaborate with, and hold ourselves accountable to.

Mayo Clinic & City of Hope®—Terry Naturally maintains scientific affiliations with researchers at two of the nation’s most prestigious medical and research institutions.
American Botanical Council (ABC)—A professional membership with the leading independent, nonprofit organization dedicated to providing education on the safe and effective use of herbs and medicinal plants.
American Herbal Products Association (AHPA)—Membership with the national trade association representing the herbal products industry, reinforcing our commitment to responsible botanical sourcing and product integrity.

These relationships ensure we're always working from the most current, credible science available—not outdated research.

Certifications you can trust

Our products carry third-party certifications that give you additional, independent assurance of what's in—and what's not in—every product.

IGEN™ non-GMO tested

Verified by Nutrasource's IGEN program to contain no detectable GMOs above program standard limits. Accepted by Whole Foods Market and other leading retailers.