What the NASC Quality Seal Means - A Pet Owner’s Guide to Choosing a Supplement Brand

You stand in the supplement aisle holding two jars. Both say “vet quality.” Both show happy dogs. One costs less.

Which one goes home with you?

Most labels sound alike. Pet supplements do not need FDA pre-approval before they reach the shelf. That leaves you to sort the real from the marketing.

The NASC Quality Seal gives you a place to start. This guide explains what it verifies, what it does not, and how to check any brand yourself.

Have a question about a product while you read? Call Stratford Animal Care at 877-498-2002.

In This Guide

• What Is the NASC Quality Seal on a Pet Supplement?

• Why Does a Pet Supplement Need a Quality Checkpoint?

• What Does the NASC Quality Seal Verify About a Brand?

• What Does the NASC Quality Seal Not Mean?

• How Does the NASC Seal Compare With FDA Oversight and Lab Testing?

• How Can You Verify a Pet Supplement Brand Before You Buy?

• How Does Stratford Animal Care Approach Quality?

• Explore Veterinary-Grade Supplements From Stratford Animal Care

• Pet Supplement Shopper Checklist

• Frequently Asked Questions About the NASC Quality Seal

• Choose a Pet Supplement Brand With Confidence

What Is the NASC Quality Seal on a Pet Supplement?

The NASC Quality Seal is a mark from the National Animal Supplement Council. It shows a supplement company passed an independent audit. The company also follows NASC rules for quality control, labeling, and adverse event reporting.

Who Is the National Animal Supplement Council?

The National Animal Supplement Council, or NASC, is a nonprofit industry group. It formed in 2001. Its goal was to bring order to a market with few clear rules.

NASC works with regulators, veterinarians, and manufacturers. It sets quality expectations for dog, cat, and horse supplements.

Is the Seal the Same as NASC Membership?

No. Membership and the seal are two different things.

A company can join NASC and sign its code of conduct. It earns permission to display the seal only after passing the audit. That audit step gives the seal its meaning.

Why Does a Pet Supplement Need a Quality Checkpoint?

Most pet supplements reach shoppers without FDA pre-approval. That gap leaves you with labels to read and claims to weigh. A quality checkpoint helps you narrow the field before you buy.

Label Claims Can Be Hard to Check

Jars list ingredients and amounts. You cannot see inside the jar. You depend on the company to match the label to the product.

Reports of mismatched labels helped drive NASC’s creation. A seal adds a second layer of review.

Marketing Words Do Not Equal Proof

Words like “natural,” “premium,” and “vet quality” sound reassuring. They carry no standard meaning.

A seal tied to an audit is different. It points to a process you can look up. That makes it easier to compare brands fairly.

Want a quick way to compare options? Browse our all brands collection and see how each line is organized.

What Does the NASC Quality Seal Verify About a Brand?

The seal verifies how a company runs its quality system. It covers audits, written procedures, adverse event tracking, labeling, and product testing. It checks the company, not the benefits of a single formula.

An Independent Audit Every Two Years

An outside auditor reviews the company’s facility and records. The company must pass to earn the seal. It must repeat the audit every two years to keep it.

So the seal shows ongoing effort, not a one-time stamp.

A Written Quality Control Manual

Members keep a manual with written standard operating procedures. It covers production and process control. The aim is consistent products from batch to batch.

Adverse Event Reporting

Members log products and ingredients in the NASC Adverse Event Reporting System, called NAERS. They report to NASC monthly. They also investigate each complaint.

This system helps spot patterns across many brands.

Labeling Rules and Caution Statements

Labels must follow NASC labeling guidelines. Some ingredients need warning or caution statements. Those statements come from FDA’s Center for Veterinary Medicine and the NASC Scientific Advisory Committee.

That means clearer labels for you.

Random Product Testing and Annual Training

An independent lab tests random products against their label claims. Member staff also complete NASC training each year.

Here is the short version:

• Independent audit every two years

• Written quality control procedures

• Monthly adverse event reporting

• Label and warning statement compliance

• Random lab testing of products

• Annual member training

What Does the NASC Quality Seal Not Mean?

The seal does not guarantee a result for every pet. It is not FDA approval, and it does not replace your veterinarian. It tells you about a company’s quality system, not a promise about your pet’s response.

It Is Not FDA Approval

NASC is a nonprofit industry group. It is not a government agency. The seal does not carry FDA approval.

It adds a voluntary audit layer on top of existing rules.

It Does Not Promise Results for Every Pet

Every pet is different. Age, species, diet, and health history all matter. A quality seal cannot predict how your pet will respond.

Supplements support wellness. They do not diagnose, treat, or replace veterinary care.

It Is a Starting Point, Not a Finish Line

Think of the seal as a first screen. Brands without it are not automatically unsafe. But a seal gives you a verified signal that is easy to check.

Always talk with your veterinarian before starting a new supplement.

How Does the NASC Seal Compare With FDA Oversight and Lab Testing?

Each layer answers a different question. The seal reviews a company’s system. FDA sets legal rules. Lab testing measures what sits in a specific batch. Together they give you a fuller picture.

A certificate of analysis shows batch results. Many brands send one on request. Ask for it when you want extra detail.

How Can You Verify a Pet Supplement Brand Before You Buy?

You can verify a brand in three short steps. Check the label, search the NASC member list, and ask for documents. The whole process takes only a few minutes.

Check the Label and Product Page

Look for the seal on the package, website, or product literature. Members may display it in all three places.

No seal visible? Move to the next step.

Search the NASC Member List

NASC publishes a list of members that earned the Quality Seal. Search for the brand or its parent company. Some brands sell under one name and hold the seal under another.

Ask for Documentation

Email or call the company. Ask about its audit status and batch testing. A confident brand answers clearly.

Not sure what to ask? Contact our team and we will walk you through it.

How Does Stratford Animal Care Approach Quality?

Stratford Animal Care is a manufacturer-direct, veterinary-grade pet health company in Oldsmar, Florida. We sell the same catalog built for veterinary practices straight to pet parents. No clinic visit is required.

Veterinary-Grade Standards, Direct to You

Our lines began in the veterinary supply chain. That shapes our formulas, packaging, and quality control.

The NASC list includes Stratford Pharmaceuticals and Rx Vitamins, Inc. Both appear as Primary Suppliers with permission to display the Quality Seal. Read more on our Our Story page.

Some medicated items follow different rules from supplements. Check each product page for details.

One Company, Multiple Focused Brands

Each brand serves a clear purpose. You can shop by need instead of guessing.

• Rx Vitamins offers targeted nutritional formulas.

• ProDen DentalCare supports daily oral care routines.

• Relaximal offers calming support for stressful days.

• VetClassics provides soft chews for everyday wellness needs.

Looking for something specific? Our joint support and health and wellness supplements collections group products by need.

Explore Veterinary-Grade Supplements From Stratford Animal Care

You now know how to read a seal. Next, see how a veterinary-grade line looks in practice.

Compare formulas, read each label, and pick what fits your pet. Every consumer order ships free. New customers save 10% with code WELCOME10.

Shop All Brands Now

Prefer to talk first? Call 877-498-2002 and our team will help.

Pet Supplement Shopper Checklist

Use this list before every supplement purchase. It takes about two minutes. Save it on your phone for your next shop.

• Find the NASC Quality Seal on the label, website, or product literature.

• Search the NASC member list for the brand or parent company.

• Read the full ingredient panel and serving size.

• Look for caution or warning statements where needed.

• Confirm the product fits your pet’s species and life stage.

• Skip claims that sound like cures or guarantees.

• Ask the brand for a certificate of analysis.

• Review the plan with your veterinarian first.

Seeing the seal does not end your research. It starts it on solid ground.

Frequently Asked Questions About the NASC Quality Seal

Does the NASC Quality Seal mean a supplement is safe?

No seal can promise safety for every pet. The NASC Quality Seal shows a company passed an independent audit and monitors adverse events. It also follows labeling rules. Those steps support quality and transparency. Your veterinarian should still guide any supplement choice, especially if your pet has a health condition or takes medication.

Is the NASC Quality Seal the same as FDA approval?

No. The seal comes from the National Animal Supplement Council, a nonprofit industry group. It is not FDA approval. FDA does not pre-approve most pet supplements before sale. The seal adds a voluntary audit layer that shows how a company makes, labels, and monitors its products.

How often are NASC member companies audited?

NASC members must pass an independent third-party audit every two years to keep permission to display the seal. Members also complete annual NASC training and report adverse events monthly. The cycle repeats, so the seal reflects ongoing compliance rather than a one-time approval.

How can I check whether a brand is an NASC member?

Visit the NASC website and open its member list of companies that earned the Quality Seal. Search for the brand or its parent company. Then check that the seal appears on the label, website, and product literature. Ask the brand for documentation if anything looks unclear.

Is NASC testing the same as third-party lab testing?

They answer different questions. The NASC seal covers a company’s quality system, labeling, and reporting. Third-party lab testing measures what sits inside a specific batch. NASC also runs random independent product testing. Many shoppers look for the seal first, then ask for a certificate of analysis.

Should I talk to my veterinarian before starting a supplement?

Yes. Talk with your veterinarian before starting any supplement, especially for pets with health conditions or prescriptions. Your vet can match a product to your pet’s age, species, and needs. Supplements support wellness and are not a replacement for veterinary care.

Choose a Pet Supplement Brand With Confidence

The aisle will always be crowded. Now you know how to cut through it.

Look for the NASC Quality Seal. Check the member list. Ask questions. Then pick the formula that fits your pet, with your veterinarian’s input.

Stratford Animal Care is ready to help. Call 877-498-2002 or email info@stratfordrx.com. Visit us at 4027 Tampa Road, Suite 3200, Oldsmar, FL 34677. Get directions on Google Maps.

Ready to shop? Visit our all brands collection today.

Are you a clinic or practice? Apply for a Veterinary Account to unlock professional pricing. Looking to build your own line? Explore Private Label Business Solutions.

Always consult your veterinarian before starting a new supplement for your pet.