The short answer: a good dog joint supplement label tells you exactly how much of each active ingredient is in one serving, how many servings your dog needs for its weight, and who made it and where. If a label hides amounts inside a "blend," gives no serving guide by weight, or makes promises about curing disease, you have less information to judge it by.
Below is a step-by-step way to read any hip and joint supplement label, using the questions veterinarians and quality organizations suggest pet owners ask.
1. Find the amount per serving for every active ingredient
Look for a panel that lists each active ingredient with a number next to it, such as "Glucosamine HCl 300 mg." That number is what lets you compare products and discuss them with your veterinarian.
- Check what "one serving" means. Amounts are usually per chew, per tablet or per scoop. A product listing 500 mg "per 2 chews" delivers 250 mg per chew.
- Watch for proprietary blends. A line like "Joint Complex 1,200 mg" followed by a list of ingredients tells you the total, but not how much of each one is inside. Fully disclosed labels list every amount separately.
- Note the units. Most ingredients are listed in milligrams (mg). Some vitamins, such as vitamin E, are listed in International Units (IU).
2. Read the ingredient form, not just the name
The same ingredient name can describe different materials, and research on one form does not automatically apply to another.
| On the label | What to know |
|---|---|
| Glucosamine HCl or sulfate | Two salt forms of glucosamine. Labels should say which one is used. |
| Fish oil or salmon oil | The oil's total weight is not the same as its omega-3 content. Veterinary dosing guidance is written in milligrams of EPA and DHA, the two main omega-3 fatty acids in fish oil.1 |
| Collagen | "Collagen" covers several materials, such as hydrolyzed collagen, undenatured type II collagen and collagen from bone broth. Look for the source in parentheses. |
| Green-lipped mussel | Comes from the New Zealand mussel Perna canaliculus. Products may use whole powder or an oil extract. |
| Turmeric | May be listed as turmeric root, organic turmeric or a curcumin extract. These are not interchangeable. |
3. Check the serving guide by weight
Joint supplements are usually dosed by body weight. A clear label shows a weight table, for example "up to 40 lb: 1 chew," plus any instructions for starting, such as a higher serving for the first few weeks. If your dog is on medication, has a health condition, or is pregnant or nursing, ask your veterinarian before starting any supplement.
4. Look at the inactive ingredients and allergens
Soft chews need flavorings, binders and preservatives. The label should list them, along with allergen statements such as "contains fish and shellfish." This matters if your dog has a known food sensitivity. Chicken-flavored chews, for example, may not suit a dog on a strict elimination diet.
5. Find out who made it and how
Animal supplements have relatively little regulatory oversight compared with drugs, so manufacturing information is one of the few ways to judge quality.2 Useful things to look for:
- The company name and a way to contact them
- Where the product is made
- Manufacturing standards, such as production in a cGMP (current Good Manufacturing Practice) facility
- Independent quality programs. The American Animal Hospital Association suggests looking for the National Animal Supplement Council (NASC) seal, which shows the company passed an independent facility audit.2
- A lot number and expiration date on the container
6. Read the claims carefully
Supplements can say they "support" or "help maintain" joint health. They should not claim to treat, cure or prevent disease, and a responsible label will say so. Be cautious with guaranteed results or "clinically proven" claims that don't say what was studied. Ingredient research is usually done on a single ingredient at a specific dose, not on the finished product you're holding.3
A quick label checklist
- Every active ingredient listed with its amount per serving
- Ingredient forms named (for example, "Glucosamine HCl," "Mixed Collagens (in Chicken Bone Broth)")
- Serving guide by body weight
- Inactive ingredients and allergen statement
- Manufacturer, location and quality standards
- Lot number and expiration date
- "Supports" language and a note to consult your veterinarian
How NordPet Health labels its chews
We built our label around this checklist. NordPet Health Hip & Joint lists all 11 active ingredients with exact amounts per 3.5 g chew, names each ingredient form, gives a serving guide by weight, and states that it contains fish and shellfish. It is made in the USA in a cGMP-certified, FDA-registered facility. You can see the full label and the research behind each ingredient on our Research page.
Sources
- Bauer JE. Therapeutic use of fish oils in companion animals. Journal of the American Veterinary Medical Association. 2011;239(11):1441–1451. doi:10.2460/javma.239.11.1441
- American Animal Hospital Association. How do you know which pet supplements are safe? NEWStat, May 2019. aaha.org
- Barbeau-Grégoire M, Otis C, Cournoyer A, et al. A 2022 systematic review and meta-analysis of enriched therapeutic diets and nutraceuticals in canine and feline osteoarthritis. International Journal of Molecular Sciences. 2022;23(18):10384. doi:10.3390/ijms231810384
Published by NordPet Health, a dog supplement brand. This guide is general information and does not replace advice from your veterinarian.