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Ingredients, Testing & Certification Guide.

A deep-dive into how supplement quality is built from raw material to finished bottle. Read this if you want your brand to stand on real quality, not just marketing claims.

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Quality is the most-claimed and least-delivered promise in supplements.

Most supplement brands say 'high quality.' This guide explains what that actually means in manufacturing terms: how raw materials are sourced and vetted, what third-party tests confirm, which GMP certifications mean what, and which marketing claims should make you skeptical.

Whether you are picking a manufacturer or trying to understand what's actually in your own products, this guide gives you the technical literacy to ask better questions.

WHAT YOU'LL LEARN

What's inside.

Ingredient sourcing

Where raw materials come from, supplier vetting, country-of-origin transparency, and what 'sourced in the USA' actually means.

Third-party testing

What gets tested for: identity, potency, contaminants. Who tests it. What the results actually tell you.

Certifications explained

GMP, NSF, SQF, USP, organic. What each certification covers (and doesn't). How to evaluate supplement supplier credentials.

Branded ingredients

Why branded/trademarked ingredients (Cognizin, Tonalin, Bioenergy Ribose) often outperform generic equivalents and command premium pricing.

Download the guide to make smarter quality decisions.

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50+ YEARS OF PROVIDING SUPPLEMENTS

Developed by us. Made for you.

With over 50 years in the health supplement industry, we are one of the most trusted dietary supplement providers. Every private label supplement we provide is doctor-formulated using thoroughly researched ingredients, then scientifically reviewed for efficacy and quality before it ever enters production in U.S. facilities.

FoodScience LLC is an FDA-registered food facility, GMP certified to SQF food safety standards, and certified to NSF GMP 455-2.

When you partner with us, our expert team is with you every step of the way. Help your customers find what they want from a source they trust. You.

Frequently asked questions

Who is the Ingredients & Testing guide written for?
Brand builders who want to understand what 'quality' actually means in supplement manufacturing, so they can evaluate manufacturing partners (us or anyone else) intelligently. Also useful for marketing leaders who want to defensibly speak to quality on their website and labels.
Does the guide get technical?
It strikes a balance. We explain testing methods and certifications in plain language with enough technical depth that you understand what's actually being checked and why. You don't need a chemistry background to follow it.
Will I understand my Certificates of Analysis after reading this guide?
Yes. The guide walks through what each line on a typical CoA means, what good values look like, and what red flags to watch for. Most brand builders never look at their CoAs because they don't know how to read them. After this guide, you will.
Can I share this guide with my retail buyers or marketing team?
Absolutely. It's specifically designed to be useful for non-manufacturing audiences. Many of our clients share it with their retail accounts as a way to demonstrate manufacturing rigor.
Does this guide cover regulatory compliance?
It touches on the regulatory framework (DSHEA, FDA testing expectations) at a high level. For deep regulatory compliance specifically, the Definitive Guide goes broader. The Ingredients & Testing guide focuses on the quality and verification side.

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Information on this site is provided for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional.