10 Best Supplements for a Senior Westie - iHeartDogs.com

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10 Best Supplements for a Senior Westie

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 29, 2025
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 Westies as possible. As your Westie 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 Westies. As always, be sure to consult your own veterinarian before making any changes to your Westie’s dietary or medical regimen.

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

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

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 Westie

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. 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 Westie’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 Westies, 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 Westies. 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.

iHeartDogs Hip and Joint Supplement for Dogs


6. Hemp Oil for Your Senior Westie’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.

Cannanine™ Ultra-Premium Broad Spectrum Hemp Oil For Mobility


7. Fiber for Your Senior Westie’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.

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8. Extra-Protein for General Westie Aging Support

As your Westie’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 Westie 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 Westie.

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 Westies 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 Westie

1. What supplements are most beneficial for senior Westies?

Senior Westies often benefit from supplements that support joint health (glucosamine, chondroitin), skin and coat health (omega-3 fatty acids), digestive function (probiotics, digestive enzymes), and overall vitality (multivitamins and antioxidants).

2. Do senior Westies need joint supplements?

Yes, joint supplements are highly recommended for senior Westies. They help reduce stiffness, improve mobility, and support cartilage health—especially since Westies can be prone to arthritis and hip issues as they age.

3. How do omega-3 supplements help older Westies?

Omega-3 fatty acids from fish oil or krill oil reduce inflammation, improve joint comfort, promote heart health, and keep your Westie’s coat shiny and skin healthy.

4. Are probiotics good for senior Westies?

Absolutely. Probiotics support gut health, improve digestion, reduce bloating, and enhance nutrient absorption—crucial for senior Westies with sensitive stomachs.

5. Should I give my senior Westie a multivitamin?

Yes, a senior-specific multivitamin helps fill nutritional gaps and ensures your Westie gets essential vitamins and minerals that may be lacking in their diet.

6. Can supplements help with cognitive decline in senior Westies?

Yes, supplements with antioxidants, omega-3s, and compounds like phosphatidylserine can support brain health and slow cognitive decline in aging Westies.

7. What’s the best supplement for a Westie with arthritis?

Glucosamine, chondroitin, and MSM are excellent for arthritis relief. These ingredients help protect cartilage, reduce inflammation, and improve mobility in senior Westies.

8. Are senior Westies prone to skin problems that supplements can help with?

Yes, Westies are known for sensitive skin. Omega-3 fatty acids, biotin, and vitamin E supplements can help reduce dryness, itching, and irritation.

9. How can antioxidants benefit senior Westies?

Antioxidants such as vitamins C and E protect cells from oxidative stress, boost the immune system, and help slow down the aging process in senior dogs.

10. Do Westies need calcium supplements in old age?

Calcium should only be given if recommended by a vet. Too much calcium can cause health issues. A balanced joint supplement and senior diet usually provide the right amount.

11. Can supplements improve my senior Westie’s energy levels?

Yes. Supplements with B vitamins, omega-3s, and antioxidants can improve energy, reduce fatigue, and support overall vitality.

12. Are there natural supplements for senior Westies?

Yes. Natural options include turmeric (for inflammation), green-lipped mussel (for joints), and coconut oil (for skin and digestion).

13. How do I choose the right supplement for my senior Westie?

Look for supplements formulated for senior dogs, with quality ingredients, third-party testing, and positive reviews. Always check with your vet before starting any new supplement.

14. Can supplements replace a balanced diet for senior Westies?

No, supplements should only complement a well-balanced diet. They are not substitutes for high-quality senior dog food but can provide targeted support where needed.

15. How soon will I see results from supplements in my senior Westie?

It varies depending on the supplement and your Westie’s condition. Some improvements in energy, coat, or digestion may be visible within a few weeks, while joint health benefits may take 6–8 weeks.

The Food and Drug Administration has not evaluated these statements. This product is not intended to diagnose, treat, cure, or prevent any disease. The information on this website is not intended to replace the advice of a qualified healthcare professional in a one-on-one relationship.

Related: Top Pet Insurance Plans for Westies

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Choosing the Best Supplements for a Senior Westie

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

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