5 Best Glucosamine Supplements for Dogs

When it comes to keeping your dog’s joints in top shape, glucosamine supplements can be a real game-changer. But with so many options on the market, how do you know which ones are actually worth your time and money? The truth is, not all dog joint supplements are created equal. Some are packed with fillers and additives, while others deliver the pure, therapeutic ingredients your dog needs for better joint health.

Whether you’re trying to keep an active pup on the move or support an older dog with arthritis, we’ve got you covered with a roundup of the top glucosamine supplements for dogs on the market today. Let's dive into the must-knows so you can make the best choice for your furry friend!

What to Consider When Choosing the Best Glucosamine Supplements for Dogs

Glucosamine joint supplements for dogs aren’t all created equal. Many of these products not only contain a fair amount of non-active ingredients (stuff like preservatives, additives, and fillers—these ingredients don’t provide any joint benefit for your dog and are meant to hold the product together and/or make sure it has a long shelf-life) which means several things:

1. Your dog isn’t getting as much therapeutic value from the glucosamine supplement as they could be
2. You have to give your dog larger doses of the product, which also means that you’re spending more on the product per dose
3. The additives, preservatives, and fillers in the product can aggravate allergies in dogs that are sensitive, and they add extra calories to your dog’s diet that you may not want

Given these truths, when you’re choosing the best glucosamine supplements for dogs, there’s a few important considerations that you need to know about:

Learning How to Read a Supplement Label

Reading pet supplement labels for glucosamine and chondroitin supplements for dogs (two ingredients that are often used together) can be tricky because each company uses a different font and format for their labels, and often have different dosage amounts listed based on the weight of the dog. Most glucosamine joint supplements for dogs also contain 50–80% inactive ingredients. Companies do this for a number of reasons, including lowering the cost of manufacturing the product, and also to create a greater perception of value, the idea being that a bigger container for a lower price (compared to similar products) equals better value to most customers.

When you’re reading a supplement label, you’re looking for the following key points of information:

Understand What an Active Ingredient Is

The table below explains the active ingredients you will find in glucosamine joint supplements for dogs. A supplement may have some or all of these ingredients:

[product-callout-1]

Active vs. Inactive Ingredients

To find the inactive ingredients in glucosamine supplements for dogs, add the numerical value of the active ingredients (glucosamine, chondroitin, MSM, Hyaluronic acid) in the supplement together, then subtract the total from the dosage you’re giving your dog.

Here’s an example:

Dog joint supplement A has a serving size of 1000 mg. You add together 600 mg of inactive ingredients like flavours, colours, additives, preservatives, fillers, and binders. When you subtract 600 from 1000, you’re left with 400 mg. That means 60% of the product is inactive ingredients.

Common inactive ingredients that you may find in glucosamine supplements for dogs are outlined in the table below:

TRI-ACTA products are excellent options for supporting your dog’s joints. This powdered supplement is made entirely of active ingredients, with no fillers, additives, or preservatives. As a result, every dose provides the highest possible level of therapeutic joint support for your dog.

Benefits of Glucosamine and Chondroitin Supplements for Dogs

It’s no secret that dogs are more prone to joint problems compared to cats. From degenerative joint issues due to aging to more serious conditions like arthritis, dog owners often turn to glucosamine and chondroitin supplements for dogs as a preventative measure to help their dog as they age, or to help treat existing joint conditions.

The specific benefits of chondroitin and glucosamine supplements for dogs includes:

1. Supports Joint Health

Glucosamine and chondroitin are essential components in maintaining healthy cartilage, which cushions the joints. As dogs age or experience wear and tear from physical activity, the cartilage in their joints can break down, leading to discomfort and mobility issues. These supplements provide the building blocks necessary to repair and maintain cartilage, helping to prevent further deterioration. Glucosamine stimulates the production of glycosaminoglycans, which form cartilage, while chondroitin promotes water retention in the cartilage, keeping it flexible and resilient.

2. Reduces Joint Pain and Inflammation

Inflammation is a common cause of joint pain, especially in conditions like arthritis. Glucosamine and chondroitin have anti-inflammatory properties that help reduce swelling in the joints, thus alleviating pain. Glucosamine supports the repair of damaged cartilage, reducing the irritation that leads to inflammation, while chondroitin helps prevent the breakdown of cartilage, thereby reducing the cause of joint inflammation. This results in improved comfort for dogs suffering from chronic joint pain, allowing them to move more easily and enjoy better quality of life.

3. Improves Mobility and Flexibility

As glucosamine and chondroitin work together to strengthen cartilage and reduce inflammation, they naturally improve a dog’s mobility and flexibility. Stronger cartilage and well-lubricated joints allow for smoother movement with less stiffness, particularly for aging dogs or those with joint issues. By boosting synovial fluid production (the fluid that lubricates joints), glucosamine enhances the overall cushioning and flexibility of the joints, making it easier for dogs to move, run, and play without discomfort.

4. Prevents Cartilage Breakdown

Cartilage breakdown is a key factor in degenerative joint diseases such as osteoarthritis. Chondroitin plays a critical role in preventing cartilage breakdown by inhibiting the enzymes that degrade cartilage tissue. It also helps retain water in the cartilage, keeping it healthy and functional. Over time, this can slow the progression of joint-related conditions, helping to preserve the integrity of the joints for longer periods. Preventing cartilage deterioration is crucial for keeping your dog active and mobile as they age.

5. Enhances Synovial Fluid Production

Synovial fluid acts as a lubricant within the joints, reducing friction between bones and enabling smoother movement. As dogs age, the production of this fluid can diminish, leading to increased stiffness and discomfort. Glucosamine stimulates the production of synovial fluid, ensuring that the joints remain well-lubricated and reducing the risk of pain due to friction. Enhanced synovial fluid production is especially important for dogs with arthritis, as it helps reduce joint stiffness and promotes more comfortable, pain-free movement.

Types of Chondroitin and Glucosamine Supplements for Dogs

There are several different types of glucosamine supplements for dogs, including powder, liquid, capsules/pills, chewables, and even injections like Adequan for dogs (although this one is a prescription provided by your vet). Some glucosamine and chondroitin supplements for dogs are easier to administer than others, depending on the dog. However, some types of supplements are prone to having more fillers, additives, binders, and preservatives, just due to the nature of the product (e.g., pills need to be held together by something, so all capsules or pills will have some sort of binder).

Here is an overview of the different types of glucosamine supplements for dogs and their different characteristics:

1. Powdered Glucosamine Supplements
   • Ease of Administration: Dog supplement powders are typically mixed with food, making them an easy option for dogs who may resist taking pills or chewables. However, picky eaters might notice a change in the taste or texture of their food.
   • Shelf Life: Powders usually have a long shelf life, provided they are stored properly in a dry, cool place.
   • Inactive Ingredients: Powders tend to have fewer inactive ingredients, with some formulations like TRI-ACTA being 100% active, containing no fillers, additives, or preservatives.
2. Chewable Glucosamine Supplements
   • Ease of Administration: Chewables are convenient and can be given as a treat, which most dogs enjoy. However, some dogs may not like the taste or texture.
   • Shelf Life: Chewables generally have a good shelf life but may be slightly shorter than powders due to the soft texture and inclusion of flavorings.
   • Inactive Ingredients: Chewables are more likely to contain fillers, flavorings, binders, and preservatives to improve taste and texture. These additives can vary by brand, but often make up a large percentage of the product
3. Capsules/Pills
   • Ease of Administration: Capsules and pills can be challenging to administer, especially to dogs that are fussy about swallowing pills. They may need to be hidden in food or treats.
   • Shelf Life: Capsules and pills usually have a long shelf life and are stable over time when stored in a dry, cool environment.
   • Inactive Ingredients: Capsules and pills may contain binders and coatings, but these often have fewer flavorings and additives compared to chewables.
4. Liquid Glucosamine Supplements
   • Ease of Administration: Liquids can be easily mixed with food or water, making them suitable for dogs that dislike pills or chewables. However, some dogs may detect a change in taste or smell.
   • Shelf Life: Liquids generally have a shorter shelf life after opening, as they may degrade faster once exposed to air.
   • Inactive Ingredients: Liquids often contain preservatives to maintain freshness and may include flavorings or additives to improve palatability, making them more likely to have inactive ingredients.

• Injections (e.g., Adequan)

• Ease of Administration:
  Injections, like Adequan, are administered by a veterinarian or under a vet’s guidance. While more invasive than oral supplements, they bypass potential issues with taste or digestive absorption, making them a good option for dogs that resist pills or chews.
• Shelf Life:
  Injections typically have a long shelf life when stored correctly and can be administered over a set period, providing ongoing joint support without daily dosing.
• Inactive Ingredients:
  Since injections like Adequan are prescription dog joint medications, they generally contain fewer inactive ingredients and are formulated to provide a direct and effective dose without the need for fillers or preservatives commonly found in oral supplements.

Injections are ideal for dogs with advanced joint conditions or those who have difficulty tolerating oral supplements. However, they require veterinary oversight due to potential adverse effects and can be considerably more expensive, making them a less convenient option for daily administration but potentially more effective for severe joint issues.

Summary of Key Differences

• Ease of Administration: Powders and liquids are easiest to mix with food, while chewables are convenient treats. Pills and capsules may require more effort for administration.
• Shelf Life: Powders, pills, and capsules tend to have longer shelf lives, while liquids and chewables may expire sooner.
• Inactive Ingredients: Powders are least likely to contain inactive ingredients, while chewables and liquids are more likely to include fillers, flavorings, and preservatives.

Side Effects of Chondroitin and Glucosamine Supplements for Dogs

While chondroitin and glucosamine supplements are generally considered safe and beneficial for most dogs, it’s important to be aware of the potential side effects. Fortunately, negative side effects or overdoses from glucosamine are rare. However, like any supplement, moderation and proper dosing are key.

Rare Side Effects

In most cases, dogs tolerate glucosamine and chondroitin well, but in rare instances, dogs may experience:

• Mild gastrointestinal issues such as vomiting, diarrhea, or gas.
• Allergic reactions, particularly in dogs allergic to shellfish, as some glucosamine supplements are derived from shellfish, like green-lipped mussel.
• Fatigue or changes in appetite, though these symptoms are uncommon and usually mild.

It’s crucial to always follow the recommended dosage guidelines provided by your veterinarian or the product label. Overdosing on glucosamine can cause more noticeable side effects, like changes in bowel movements or joint stiffness, though these effects are typically reversible once the dosage is adjusted.

Avoid Human Glucosamine

One important precaution is to never give your dog human glucosamine supplements. The dosages for humans and dogs are different, and human supplements may contain harmful additives. Specifically, Xylitol, an artificial sweetener commonly found in some human glucosamine products, is highly toxic to dogs. Even small amounts of Xylitol can cause severe health problems in dogs, including low blood sugar (hypoglycemia), liver failure, and in extreme cases, death.

Top Glucosamine Supplements for Dogs

When selecting the best glucosamine supplements for your dog, it's important to consider the amount of active ingredients per dose, certifications or designations the product carries, and price. Several high-quality glucosamine supplements for dogs stand out for their efficacy, safety, and value. Below are five top recommendations that offer substantial joint support for your dog without fillers or additives commonly found in lower-quality products.

1. TRI-ACTA for Pets

• Active Ingredients per Dose:
  Each 1000 mg dose contains 500 mg of glucosamine (250 mg glucosamine sulfate and 250 mg glucosamine HCl), 125 mg of chondroitin sulfate, and 375 mg of MSM. This product is 100% entirely made of active ingredients, with no fillers or additives.
• Certification:
  Certified as a Veterinary Health Product (VHP) by Health Canada, which ensures product quality and safety.
• Price:
  TRI-ACTA starts at $23.99 CAD for a 60 g container, offering great value for its potency and purity.

[product-callout-2]

For an extra boost, TRI-ACTA HA contains 7mg of hyaluronic acid for added lubrication of joints and additional MSM (443mg).

2. VetriScience GlycoFlex Plus

Source

• Active Ingredients per Dose:
  
  
• Delivers 800 mg of glucosamine HCl (derived from shrimp and crab), 500 mg of MSM, and 250 mg of chondroitin per chew, with added antioxidants and green-lipped mussel for enhanced joint health. Note that there are inactive ingredients per dose due to this product being a chew.
• Certification:
  NASC (National Animal Supplement Council) seal of approval, ensuring high-quality standards and ingredient purity.
• Price:
  GlycoFlex Plus is roughly $42 CAD for 60 chews, offering a strong balance between price and comprehensive joint support.

3. Extend Joint Care for Dogs

Source

• Active Ingredients per Dose:
  Contains 500 mg of glucosamine, 250 mg of MSM, and 200 mg of type II collagen per packet, formulated to support cartilage repair and reduce joint pain.
• Certification:
  Veterinarian-approved product, with natural ingredients that are free from artificial colors and preservatives.
• Price:
  Extend Joint Care is priced around $51.95 for 30 packets, offering a highly convenient and portable solution for dog owners.

4. Zesty Paws Mobility Chews

• Active Ingredients per Dose:
  Each chew contains 450 mg of glucosamine, 400 mg of MSM, and 300 mg of chondroitin, along with additional turmeric and green-lipped mussel to further support joint health.
• Certification:
  NASC-certified, ensuring adherence to strict manufacturing and safety standards.
• Price:
  Zesty Paws is approximately $35 for 90 soft chews, providing great value for dogs who enjoy treat-like supplements.

5. The Missing Link Ultimate Canine Hip & Joint

Source

• Active Ingredients per Dose:
  Each serving contains 400 mg of glucosamine, plus omega-3 and omega-6 fatty acids, dietary fiber, and other superfoods for all-around joint health and wellness.
• Certification:
  NASC-certified, ensuring adherence to high-quality manufacturing processes.
• Price:
  Missing Link Hip & Joint is approximately $36.77 CAD for a 1 lb bag, which offers great value for pet owners who prefer powdered supplements that can be easily mixed with food.

Conclusion

Finding the right glucosamine supplement for your dog doesn’t have to be complicated. By focusing on products that offer high levels of active ingredients and minimal fillers, you’re already ahead of the game. Whether you choose a powder, chewable, liquid, or pill, the key is to pick a supplement that fits your dog’s preferences and your lifestyle. With options like TRI-ACTA, you can feel confident that your dog is getting the best support for their joints—and the relief they deserve. So, go ahead and give your dog the joint health boost they need to stay happy and active!

Purchase TRI-ACTA online or learn where to buy at a store near you.
[product-callout-1]