Published by Herb & Hound Co. | Natural Canine Health, NZ Made
When Maude was at her worst, we didn’t just research one organ. We researched everything. And what kept coming up, again and again, was how rarely the liver and kidneys are talked about together — despite the fact that they are, in almost every meaningful sense, partners.
They share the same fundamental job: keeping your dog’s body clean. And when one starts to struggle, the other almost always feels it too.
This is something we don’t talk about enough in the world of canine health. We tend to treat organs in isolation — a liver supplement here, a kidney tonic there — without stepping back to appreciate that the body is one interconnected system. Understanding how these two organs work together might just change how you think about your dog’s long-term wellbeing.
What the Liver Does
Think of the liver as your dog’s primary processing plant. Everything that enters the body — food, medications, environmental chemicals, even the air they breathe — passes through the liver for filtration and conversion. Its key jobs include:
Detoxification — neutralising and preparing toxins for removal from the body
Metabolism — converting nutrients from food into forms the body can actually use
Bile production — manufacturing the bile that the digestive system needs to break down fats
Protein synthesis — producing the proteins that keep blood clotting, immune function, and tissue repair running smoothly
Glycogen storage — holding energy reserves so the body can draw on them betweenmeals
The liver is also one of the body’s most regenerative organs — it has a remarkable capacity to repair itself when given the right conditions. But that resilience has limits, particularly when it’s dealing with a high and consistent toxic load.
What the Kidneys Do
If the liver is the processing plant, the kidneys are the filtration system. Their job is to take what the liver has already processed and flush the waste products out of the body through urine.
The kidneys also:
Regulate fluid balance — controlling how much water the body retains
Manage blood pressure — through hormones that regulate fluid volume
Balance electrolytes — keeping sodium, potassium, and phosphorus at safe levels
Produce red blood cell hormones — signalling the body to produce the cells that carry
oxygen Regulate pH — keeping the blood’s acid-alkaline balance within a healthy range
Every minute of every day, your dog’s kidneys are filtering their entire blood volume - processing toxins, pulling out what needs to be excreted, and returning clean blood into circulation.
Why They Can’t Work Without Each Other
Here’s where it gets interesting — and important.
The liver and kidneys are in constant communication. The liver processes toxins and converts them into water-soluble compounds, specifically so the kidneys can filter them out.
Without the liver doing its job upstream, the kidneys receive a far higher burden of unprocessed waste — more work, more wear, more risk of damage over time.
The relationship runs the other way, too. When kidney function declines, waste products that should be excreted start accumulating in the bloodstream. That means the liver has to work harder to compensate — processing and reprocessing compounds that would normally have been flushed out already. It’s a cycle that, once established, can be difficult to break. Which is why supporting both organs — not just one — is such an important part of a holistic approach to canine health.
Signs That One or Both May Be Under Pressure
Because the liver and kidneys are so closely linked, their distress signals often overlap. Here are some of the most common signs that your dog’s filtration system may be working harder than it should:
Signs leaning toward liver stress:
Yellowing of the eyes or gums (jaundice)
Vomiting or digestive upset without a clear cause
Loss of appetite or unexplained weight loss
Lethargy and general dullness
Bloated or uncomfortable abdomen
Signs leaning toward kidney stress:
Increased thirst and frequent urination — or conversely, very little urination
Bad breath with an ammonia-like quality
Mouth ulcers
Pale gums
Weight loss and reduced muscle mass
Signs common to both:
Low energy and reluctance to exercise
Coat and skin changes
Nausea or reduced appetite
Behavioural shifts — quieter, less engaged, not quite themselves
If your dog is showing any of these signs persistently, a vet visit and blood panel is the right first step. Liver enzyme levels and kidney markers (creatinine, BUN, and phosphorus) are all measured in a standard blood test and give a clear picture of how both organs are functioning.
Dogs Most at Risk
Certain dogs are more vulnerable to liver and kidney stress, and may benefit from proactive support:
Senior dogs — both organ systems naturally decline with age
Dogs on long-term medications — many pharmaceuticals are processed through the liver and excreted by the kidneys, creating cumulative load
Dogs with a history of urinary tract infections — repeated infections can scar kidney tissue over time
Breeds with known predispositions — Cocker Spaniels and Bedlington Terriers for liver conditions; Bulldogs, Cavalier King Charles Spaniels, and Persian-adjacent breeds for kidney issues
Dogs in areas with heavy agricultural or chemical exposure — NZ farming environments can mean higher environmental toxin loads than urban settings
A Whole-Body Approach to Filtration Health
The most effective way to support the liver and kidneys isn’t to wait until something goes wrong. It’s to reduce the burden on both organs proactively — through diet, environment, and targeted botanical support.
Diet matters enormously. Highly processed foods with artificial preservatives and low- quality proteins add directly to the toxic load the liver must process. Where possible, opt for whole food ingredients and limit additives.
Water intake is critical for the kidneys. Make sure your dog always has access to clean, fresh water. Chronic low-level dehydration is one of the most overlooked contributors to kidney stress.
Reduce chemical exposure where you can. We’re not suggesting you abandon your vet’s advice on flea or tick treatment — but spacing out chemical treatments, choosing gentler alternatives where appropriate, and keeping your dog away from freshly sprayed lawns all add up.
Consider herbal support for both organs. Traditional herbal medicine has long recognised the liver and kidneys as a pair, and some of the most respected botanicals in this space have been used for centuries to support healthy function in both.
The Botanicals Behind Our Approach
At Herb & Hound Co., we’ve formulated two products specifically designed to work together — one for each half of your dog’s primary filtration partnership.
LiverLift — Hepatic Detox Support
LiverLift brings together four of the most trusted liver-supportive botanicals in herbal medicine:
Milk Thistle — the gold standard herb for liver health. Its active compound silymarin is widely studied for its role in supporting liver cell regeneration and protecting against oxidative damage.
Dandelion Root — a gentle traditional tonic that supports healthy bile flow and assists the liver’s natural detoxification pathways.
Schisandra Berry — a revered adaptogen from traditional Chinese medicine, long associated with liver-protective and stress-modulating properties.
Artichoke Leaf — used since antiquity to support bile production and healthy fat metabolism.
All in a glycerine base — alcohol-free, palm-free, and easy to administer even for fussy dogs.
KidneyCare — Renal Tonic Support
KidneyCare is formulated to support healthy kidney filtration and urinary tract function, using botanicals with a long history of use in renal health:
A carefully selected blend designed to support the kidneys in doing what they do best — filtering, flushing, and maintaining the fluid and mineral balance that keeps your dog feeling well.
Both products are made in small batches on the Coromandel, using certified organic herbs and NZ spring water. No artificial flavours, no preservatives, no alcohol.
Used together, They Make Sense Because the liver and kidneys are partners, supporting them together simply makes sense.
Many of our customers use LiverLift and KidneyCare as a pair — particularly for senior dogs, dogs on ongoing medication, or dogs who’ve had any history of organ stress.
If you’re considering either product, we’d always encourage a conversation with your vet first — especially if your dog is already on treatment. Both products are formulated for compatibility with most conventional care, but your vet knows your dog’s full picture.
Explore LiverLift → Explore KidneyCare →
This article is for informational purposes only and does not constitute veterinary advice. Always consult a qualified veterinarian regarding your dog’s health, particularly before introducing new supplements alongside existing treatments.