Dog Supplements for Allergies

If you are a dog parent dealing with a pup with skin allergies, you’ve probably scrolled through endless advice and product recommendations. From cod liver oil to fancy probiotics, the world of supplements can be overwhelming – and, unfortunately, full of hype and misconceptions. 

Let’s break down what really matters when it comes to supplements for allergic dogs, so you can truly make a difference to your dog’s skin health and wellbeing. 

Understanding what matters: Essential Fatty Acids

You might’ve heard about essential “omega-3s” and “omega-6s,” but what are they, really? These are types of natural fatty acids — and the essential bit means your dog’s body can’t make them on its own and they MUST get them from their diet. There are different types, but for dogs with allergies (or poor skin quality for any other reason), the key ones are: 

• Omega-6s (like linoleic acid): Vital for skin health and the structure of the skin barrier. Deficiency leads to dry, unhealthy skin (and even broad health problems, like reproductive issues). 

• Omega-3s (EPA and DHA): Huge players in reducing inflammation and “calming down” an overactive immune system – the crux of allergic reactions. 

Why does this all matter for allergic dogs? Allergic dogs often have drier skin and a weaker “skin barrier,” making their skin more susceptible to stuff in the environment known as allergens (think pollen, dust, mites). Supporting the skin with these fatty acids can strengthen its defenses and reduce inflammation, irritation and itching. 

Real results take time

Research shows that supplementing dogs with the right fatty acids improves their skin health, calms inflammation, and can even reduce itchiness by 40-50% after about two months. But here’s the thing: results take TIME. 

Supplements need weeks to months to incorporate into new skin cells. If you try a supplement and don’t see an instant change, don’t abandon ship right away… but don’t rely solely on supplements either. 

Managing allergies works best with a multi-pronged approach – think vet-prescribed therapies, environmental management, AND the right supplements. 

Choosing supplements wisely

Not all supplements are created equal. Here’s what you need to know: 

• Marine-based oils (fish oil, marine algae oil, krill oil): Best sources for the full omega-3 profile (EPA & DHA) that your dog needs. These are far superior for allergy support. 

• Flaxseed/linseed oil: Popular and inexpensive, but only provides ALA (another omega-3), which dogs convert very poorly into the forms they actually need. It is also a source of omega-6 fatty acids. 

• Evening primrose oil: A great source of omega-6s. 

Rather than choose to give a single-source oil supplement, it is far better to give a product that contains a blend of the oils the skin needs for optimal quality. This can be given in two ways: 

• Through feeding a specially formulated skin diet such as Royal Canin Skintopic or Hills Derm Complete 

• Through the use of a high-quality supplement such as Coatex. 

 Watch out for overdose and side effects

More isn’t always better! Over-supplementing can cause problems: 

• Vomiting or diarrhea 

• Weight gain (oils are calorie dense) 

• Delayed wound healing and blood clotting problems 

• Suppressed immune response (which can make infections more likely) .

In addition, some dogs should avoid fatty acid supplementation or use them with care, such as those with pancreatitis, fat intolerance, certain bleeding disorders, or those already overweight. When in doubt, consult your vet. 

What about probiotics?

Probiotics (beneficial bacteria) may also have a role in managing allergic skin disease. This is an emerging treatment option and while studies are in their infancy, it appears that very specific strains of probiotic bacteria can help with the control of allergic skin disease in dogs. Watch this space! 

Bottom line

Supplements – especially the right fatty acid blends – can be a powerful part of an allergy management plan for your dog, but there’s a lot of misleading information and low-quality products out there. Work closely with your vet to ensure you’re choosing products that are safe, effective, and suitable for your dog’s needs. Be patient, and remember: supplements are just one piece of the allergy puzzle! 

Questions or concerns about supplements for your allergic dog? Don’t hesitate to reach out to your local Vetlife clinic for personalised advice!