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St. Bernard may be famous for their gentle personalities and massive size, but many owners also find themselves dealing with persistent itching and skin irritation caused by allergies. Environmental allergens, seasonal triggers, and food sensitivities can all contribute to uncomfortable scratching, licking, and dry skin. While it’s important to consult your veterinarian to identify the underlying cause, certain natural ingredients may help support healthy skin, maintain a strong immune system, and provide relief from allergy-related itchiness.
Best Natural Remedies to Help Your St. Bernard Stop Itching
1. Give Your St. Bernard a High Quality Fish Oil Daily
First and foremost, make sure you’re giving your St. Bernard a high-quality fish oil. Fish oil contains omega-3, which is lacking in most commercial pet foods since it cannot survive the manufacturing process. Omega-3 helps soothe inflammation, and in some studies, it significantly reduced itchiness in dogs with moderate to mild atopic dermatitis. We like Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs because it provides EPA and DHA omega fatty acids from wild Alaskan pollock and salmon to help support healthy skin, reduce shedding, and promote a soft, shiny coat. It’s also easy to serve thanks to the convenient pump bottle, making it simple to add to your St. Bernard’s daily meals. (Also available on Amazon.)
2. Try Adding Quercetin To Your St. Bernard’s Diet
Quercetin is also known as “Nature’s Benadryl.” This ingredient has become very popular in recent years for dogs as it helps suppress inflammation in the body. It’s a bit hard to find in supplement form, but is included in some soft chew formulas. (here’s one on Amazon as well)
3. Try a Colostrum Supplement for Your St. Bernard
Found in mother’s milk, bovine colostrum helps support a normal histamine response to help improve allergies. Colostrum contains immunoglobulins (often referred to as antibodies) which help boost the performance of your St. Bernard’s immune system. Canine colostrum supplements are a bit hard to find, but are included in some soft chew formulas. (here’s our favorite on Amazon Prime)
4. Add Reishi Mushrooms To Your St. Bernard’s Diet
Reishi mushroom contain ganoderic acid, which is a compound that inhibits the release of histamines. Histamines cause allergic reactions in your St. Bernard’s body. In addition, this powerhouse ingredient has anti-inflammatory properties which can help relieve itchiness. Reishi supplements for dogs are available on Amazon as well.
5. Try Giving Apple Cider Vinegar to Your St. Bernard Topically or As a Dietary Supplement
ACV provides digestive support and relief for allergic reactions. A small amount can be put into your dog’s water bowl, or you can apply it topically. You can also apply a 50% mixture of ACV, and 50% water directly to your dog’s skin in areas that are experience rash or itchiness. If given orally, you can also find apple cider vinegar soft chew supplements for dogs.
6. Try Giving Your St. Bernard a Colloidal Oatmeal Bath
A popular remedy for people too, this age-old source of relief can also work for your St. Bernard. See our review of our favorite oatmeal shampoos for dogs here.
7. Try Massaging Coconut Oil on Your St. Bernard’s Skin (or adding to their diet)
Coconut oil can be applied directly to your dog’s skin. It helps relieve itchiness and also can improve your dog’s skin and coat in general. Many dogs love the taste, which can actually become a bit of a problem if your pup licks it off their skin too quickly! We like the CocoTherapy brand of coconut oil made specifically for dogs.
8. Test if a Probiotic Makes a Difference for Your St. Bernard
Scientists are finding many links between our digestive system and various diseases. Many pet owners notice a difference in their dog’s allergy symptoms after giving a canine probiotic supplement (make sure to use one made for dogs). Your results may vary, but it’s worth a try.
Many of the above ingredients can be found in this 6-in-1 allergy and itch supplement for dogs, including salmon oil, reishi mushrooms, colostrum, apple cider vinegar, quercetin, and probiotics.
Also available on Amazon Prime 
Supporting Your St. Bernard’s Skin Health and Allergy Relief
Helping your St. Bernard find relief from allergies often requires a combination of veterinary guidance, proper nutrition, and targeted supplements. Ingredients such as omega-3 fish oil, quercetin, colostrum, probiotics, reishi mushrooms, and apple cider vinegar may help support healthy skin and reduce itching caused by seasonal or environmental allergens. With a consistent approach and the right nutritional support, you can help your St. Bernard stay more comfortable, maintain a healthy coat, and spend less time scratching.
Toledo, United States.