iHeartDogs is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no extra cost to you.

We all want as many years with our shelties as possible. As your sheltie 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 shelties. As always, be sure to consult your own veterinarian before making any changes to your sheltie’s dietary or medical regimen.

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

Joint pain and arthritis are some of the most common ailments an aging sheltie 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.

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

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. 

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

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.

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. In addition, many high quality krill supplements also contain a powerful compound called astaxanthin, an extremely potent antioxidant.

4. Milk Thistle for Your Sheltie’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 shelties, 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, deracoxib, 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 shelties. 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, contain turmeric in the formula.

6. Hemp Oil for Your Senior Sheltie’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 a nervous dog, 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.

7. Fiber for Your Senior Sheltie’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.

8. Extra-Protein for General Sheltie Aging Support

As your sheltie’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 sheltie parents opt to add additional protein over 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 sheltie.

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. 

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

One of the biggest causes of early death in shelties 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.

Frequently Asked Questions: Best Supplements for a Senior Sheltie

1. What are the best supplements for a senior Sheltie?

Senior Shelties often benefit from joint support (glucosamine, chondroitin), omega-3 fatty acids for heart and coat health, probiotics for digestion, and antioxidants to support cognitive function.

2. Why does my senior Sheltie need supplements?

As Shelties age, they may face issues like arthritis, reduced mobility, heart problems, and digestive sensitivities. Supplements can help manage these conditions and improve quality of life.

3. Are joint supplements necessary for older Shelties?

Yes, joint supplements with glucosamine, chondroitin, and MSM can reduce stiffness, ease pain, and support cartilage health—common issues in senior Shelties.

4. Which supplements help with my Sheltie’s coat and skin?

Omega-3 fatty acids (from fish oil or krill oil) help reduce shedding, soothe dry skin, and promote a shiny coat in aging Shelties.

5. Do senior Shelties need probiotics?

Yes, probiotics help balance gut bacteria, aid digestion, and reduce diarrhea or constipation—common in older dogs with sensitive stomachs.

6. Can supplements improve my Sheltie’s cognitive function?

Antioxidants like vitamins C and E, plus DHA from fish oil, can support brain health and may slow cognitive decline in senior Shelties.

7. What vitamins are most important for a senior Sheltie?

Key vitamins include vitamin E (immune health), vitamin C (antioxidant), B-complex (energy), and vitamin D (bone health).

8. Should I give my senior Sheltie omega-3 supplements?

Yes, omega-3s support heart health, reduce inflammation, improve mobility, and promote a healthy coat—all crucial for aging Shelties.

9. Are supplements safe for senior Shelties?

Most high-quality supplements are safe, but it’s best to consult your vet before starting, especially if your Sheltie takes medications.

10. Can supplements help with arthritis in Shelties?

Definitely. Supplements like glucosamine, chondroitin, MSM, and green-lipped mussel can help reduce pain and improve mobility in arthritic Shelties.

11. How do I choose the right supplement brand for my Sheltie?

Look for veterinarian-recommended brands, third-party testing, natural ingredients, and formulas specifically designed for senior dogs.

12. Are there supplements for Sheltie heart health?

Yes, taurine, L-carnitine, and omega-3 fatty acids support cardiovascular health—important for Shelties prone to heart conditions.

13. How long before I see results from supplements?

Most supplements take 4–6 weeks to show noticeable results in mobility, coat quality, or energy levels in senior Shelties.

14. Can I give multiple supplements to my senior Sheltie?

Yes, but always check with your vet to avoid overlapping ingredients or overdosing. Combination senior formulas may be the safest option.

15. Do supplements replace a healthy diet for senior Shelties?

No, supplements should complement—not replace—a balanced, high-quality senior dog diet tailored to your Sheltie’s 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 Shelties

Choosing the Best Supplements for a Senior Sheltie

As Shelties 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 Sheltie 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 Sheltie’s overall well-being and give them the healthy, happy golden years they deserve.

iHeartDogs is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no extra cost to you.