Four Leaf Rover Harmony - Quercetin for Dogs, Seasonal Allergy Support | Liposomal quercetin, L-theanine, Chinese skullcap, broccoli sprouts and spirulina. Supports a normal histamine response.

Great product, helped me get my dog off apoquel!

This stuff has changed my dog’s mood and overall health she acts like a puppy

This product did not improve my dog's health AT ALL. In fact, I observed more scratching by week 2 of using. Silly me! I still gave it to him for a third week. I was so hopeful but just another hyped product that does nothing!

We'll see how this works once the weather warms up but for now, I do think this took the edge off and kept me from having to give my dog daily Apoquel during this past winter. I'm not sure that he loves the taste (it's very green smelling) but if I mix it in with a topper for his kibble he eats fine. My other dog with MCT's wasn't affected by this (good or bad) but since it didn't seem to make a difference for her, I stopped adding it to her food. It certainly lasts longer when only given to one dog! Pricey but overall not a bad product to trial and see if it works for yours.

I love Four Leaf Rover products. They are always top notch and worked well for my dog, but the "allergies" were a constant battle, requiring four rounds of anti-fungals and anti-biotics over 18 months. I was told by one board certified dermatologist, a holistic vet, and two regular vets that the problem was allergies, and they all recommended Apoquel and Cytopoint. I suspected a leaky gut, so I gave my dog probiotics, kifer, bone broth, yogurt, etc. It wasn't enough. When I did a Gut Biome test, there was a problem where some bacteria was absent and some were overgrown. I gave my dog fecal transplant pills, and his hotspots and yeast disappeared, and now his hair is coming in thick and full. He even seems happier...waking up every morning with a big smile and spring in his step.

I have fostered some rescue Vizslas with itchy skin. This product significantly reduced itchyness during pollen season when combined with quality fish oil capsules.

Unfortunately in 2026 this product went through both a label and formulation change-- Irish Moss increased by 500%! Its so disheartening when something is working well for your allergy dog that the company makes changes like this, especially without niotice. Too much Irish Moss can cause hives-- the exact thing we're treating. Super disappointed with Four Leaf Rover for doing this and wondering if this is why my dog has been struggling with skin issues since January when we was doing so well before. When there's a change this big in formulation, you need to alert customers on the bottle. Not list it as "proprietary blend".

Did nothing for my German shepherd’s allergies but was helpful to my friends, Rhodesian ridge back’s allergies.