10 Best Supplements for a Senior Beagle - iHeartDogs.com

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10 Best Supplements for a Senior Beagle

By: Tarit Das
Tarit is a Special Projects Coordinator at iHeartDogs.com, iHeartCats.com, and The Hero Company. He likes pets for their honesty and loyalty and believes they have no match. They are one of the most selfless creatures and just love to be around their owners.Read more
| September 28, 2025
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We all want as many years with our Beagles as possible. As your Beagle ages, you may be looking for additional ways to support their health.

The following list of supplements is among the top recommended products for senior Beagles. As always, be sure to consult your own veterinarian before making any changes to your Beagle’s dietary or medical regimen.

1. Glucosamine & Chondroitin for Supporting Your Senior Beagle’s Aging Joints

Joint pain and arthritis are some of the most common ailments an aging Beagle will face. Supplements containing glucosamine aid in replacing lost joint fluid, providing much-needed lubrication and cushioning to stiff, achy joints. Chondroitin sulfate has been shown to improve the structural integrity of joints by repairing damaged cartilage and preventing further cartilage breakdown.

You can learn more about the glucosamine and chondroitin supplement iHeartDogs recommends here.

iHeartDogs Hip and Joint Supplement for Dogs


2. Probiotics for Immune & Gut Support for Your Senior Beagle

Probiotics are supplements containing large doses of microorganisms. They promote a healthy GI tract by allowing the “good” bacteria in the gut to flourish. “Bad” bacteria often accumulate due to stress, illness, and prolonged use of medications. Since the majority of your senior dog’s immune system is located in the gut, probiotics also help to maintain health throughout the body.

We’d recommend looking into a 3-in-1 probiotic that also contains prebiotics and digestive enzymes. 

iHeartDogs 3-In-1 Probiotic Dog Chews with Pumpkin for Improved Digestion and Gut Health


3. Omega-3 Essential Fatty Acids to Fight Inflammation & Reduce Itchy Skin for Your Senior Beagle

Older dogs may experience dry, itchy skin and dull, brittle coats. Adding Omega-3 and Omega-6 fatty acids to a senior dog’s diet can reduce inflammation and promote healthy skin and a soft, shiny coat. Omega-3 fatty acids also support healthy mobility and bone health. Additional benefits in the body include allergy support, heart health, strong brain function, and visual acuity.

Related: Ultimate Guide to Senior Dog Supplements

Krill oil is one of the best sources of Omega-3 available, as it contains a special form of fatty acids that are more usable in your dog’s body. Additionally, many high-quality krill supplements contain a powerful compound called astaxanthin, a highly potent antioxidant.

Omega 3-6-9 Select Grain Free Skin & Coat Chews


4. Milk Thistle for Your Beagle’s Liver & Kidney Support, Especially for Dogs Taking Pain Meds

Natural milk thistle is said to protect the liver from damage and may actually improve liver function. This is important for aging Beagles, especially those with existing liver problems and those taking medications known to be taxing on the liver. For example, any dog regularly taking an NSAID pain medication such as carprofen, Novox, Rimadyl, deracoxi, Deramaxx, firocoxib, Previcox, meloxicam, Metacam, grapipant, or Galliprant may need additional liver support. Make sure to discuss this with your vet.


5. Curcumin (from Turmeric) for Pain & Inflammation

This “wonder spice” is a derivative of turmeric and promotes brain and joint health in aging Beagles. Some studies have suggested that turmeric can provide nearly the same pain relief as an NSAID drug. Lastly, curcumin is also known for its possible anti-tumor properties and in helping to support dental health.

Many high-quality hip and joint supplements, such as this one, contain turmeric in the formula.

iHeartDogs Hip and Joint Supplement for Dogs


6. Hemp Oil for Your Senior Beagle’s Pain & Inflammation

No discussion of senior dog supplements would be complete without discussing hemp. In the last 5 years, several studies have begun to show great promise for hemp in helping to alleviate joint pain, calm nervous dogs, reduce inflammation caused by allergies, and reduce seizures in epileptic pups.

We’d recommend a hemp oil or hemp chew that contains 0% THC, as well as using a product that is tested multiple times throughout the manufacturing process to ensure a pure and potent product. Here at iHeartDogs, we only sell and recommend the Cannanine brand.

Cannanine™ Ultra-Premium Broad Spectrum Hemp Oil For Mobility


7. Fiber for Your Senior Beagle’s Digestive Health

Senior dogs may experience changes in the lining of the intestines, which lowers their ability to digest and absorb the nutrients in their food. Adding healthy fiber to your older pup’s diet supports a healthy digestive system, combats constipation, and promotes overall health.

A devoted dog gazing lovingly, embodying the essence of unwavering loyalty.


8. Extra-Protein for General Beagle Aging Support

As your Beagle’s body ages, it breaks down muscle and tissues at a faster rate than before. For this reason, aging dogs need extra protein in their diet (note: there are some exceptions, such as if your senior dog has chronic kidney disease, in which your vet may recommend a lower protein diet).

Many senior Beagle parents opt to add additional protein to their dog’s kibble, such as a cooked or raw egg, chicken breast, or a freeze-dried dog food topper. Surprisingly, most kibbles only contain around 20-30% protein, so boosting this vital nutrient can be very helpful for seniors. It can also substantially help their appetite!


9. Dog-Safe Mushrooms such as Shiitake, Turkey Tail, & Reishi for Immune Boosting Support

Mushrooms are an incredibly exciting area of emerging nutritional studies. Some clinical trials have shown great promise in extending the lifespan of dogs battling cancer. And while it’s not a miracle, mushrooms like Reishi, Turkey Tail, and Shiitake can undoubtedly boost the immune system of your Beagle.

As you are probably aware, many mushrooms can be toxic to dogs, especially those found in your yard. Make sure to use a dog-safe mushroom supplement if you choose to give one to Fido. This particular formula contains 6 different mushrooms, as well as organic chicken bone broth. 

Bone Broth For Dogs Immune Support Powder

 


10. Collagen-rich bone Broth, which supports healthy joints and skin in seniors

One of the biggest causes of early death in Beagles is reduced mobility. Bone broth is packed with joint-supporting nutrients like glucosamine, chondroitin, and collagen, all of which help keep your older pup mobile longer. In addition, most senior dogs LOVE the flavor, and it will boost the nutrition and taste of their current food.

The product iHeartDogs recommends and sells contains both bone broth and 6 different immune-supporting mushrooms.

Bone Broth For Dogs Immune Support Powder


 

FAQs About the Best Supplements for a Senior Beagle

1. What supplements are most beneficial for senior Beagles?

Senior Beagles benefit most from supplements that support joint health, cognitive function, heart health, and immunity. Popular choices include glucosamine, omega-3 fatty acids, probiotics, and antioxidants.

2. Why do senior Beagles need supplements?

As Beagles age, they are more prone to joint stiffness, weight gain, heart conditions, and cognitive decline. Supplements provide targeted nutrients to support overall health and slow age-related issues.

3. Are joint supplements necessary for older Beagles?

Yes. Beagles are prone to hip dysplasia and arthritis in their senior years. Glucosamine, chondroitin, and MSM help maintain joint flexibility and reduce discomfort.

4. Can omega-3 fatty acids help my senior Beagle?

Absolutely. Omega-3s from fish oil improve skin, coat, joint mobility, and brain health. They also reduce inflammation, making them essential for older Beagles.

5. Should I give probiotics to my senior Beagle?

Yes. Probiotics improve digestion, nutrient absorption, and immune function—important for senior Beagles who may have sensitive stomachs or irregular digestion.

6. Are multivitamins safe for senior Beagles?

Yes, high-quality dog multivitamins help fill in nutritional gaps and support healthy aging. Always choose supplements formulated specifically for dogs.

7. Do senior Beagles need supplements for heart health?

Beagles are prone to heart conditions as they age. Supplements with taurine, L-carnitine, and CoQ10 support cardiovascular health.

8. How can supplements help my Beagle’s cognitive health?

Senior Beagles may experience memory loss or confusion. Supplements with antioxidants, omega-3s, and phosphatidylserine support brain function and slow cognitive decline.

9. Can senior Beagles take turmeric supplements?

Yes, turmeric contains curcumin, a natural anti-inflammatory that helps with joint pain and arthritis. Look for dog-safe formulations.

10. What supplements help with my Beagle’s coat and skin?

Fish oil, omega-3 fatty acids, and vitamin E keep your Beagle’s coat shiny and skin healthy, reducing dryness and shedding.

11. Are there supplements for Beagle weight management?

Yes. Fiber supplements, probiotics, and L-carnitine help regulate weight, digestion, and metabolism, which is crucial since Beagles are prone to obesity.

12. Can I give my senior Beagle human supplements?

No. Many human supplements contain unsafe dosages or harmful ingredients for dogs. Always choose supplements formulated for dogs.

13. How often should I give supplements to my Beagle?

Most supplements are given daily, but the exact dosage depends on the product, your Beagle’s age, and weight. Follow the vet’s guidance.

14. When should I start giving my Beagle supplements?

It’s best to introduce supplements around 7–8 years old, as Beagles are considered seniors at this stage. Early use supports healthier aging.

15. Should I consult a vet before giving supplements?

Yes. Always consult your veterinarian to ensure supplements are safe, effective, and tailored to your Beagle’s specific health needs.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. The information on this website is not intended to replace a one-on-one relationship with a qualified healthcare professional.

Related: Top Pet Insurance Plans for Beagles

Choosing the Best Supplements for a Senior Beagle

As Beagles age, their nutritional needs change, making the right supplements an essential part of their daily care. From joint support to digestive health and immune-boosting formulas, high-quality supplements can help keep your senior Beagle active, comfortable, and happy. Always consult your veterinarian before adding new supplements to ensure they match your dog’s specific health needs. By choosing the best senior dog supplements, you’ll support your Beagle’s overall well-being and give them the healthy, happy golden years they deserve.

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