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Lisa P.
My cat has been on Nutribial for around 30 days now, and the improvement is so apparent. Thank you.
Most do, without a fight. A few drops go over their normal wet food, a lick mat, or a treat. The heme iron makes it palatable, so there are no pills to force and no powder they walk away from.
It builds daily, it is not an overnight switch. Most owners tell us they notice the first changes around weeks two to three. With a senior cat, steady beats sudden.
A liquid blend of B-vitamins and gentle heme iron, made for cats. Heme iron is the form found naturally in meat, which is how cats are built to take iron on board. No fillers and no artificial flavours, made in a quality-controlled facility and checked batch to batch.
You are covered by a 60-day money-back guarantee, bottle empty or not. If you do not feel good about the difference, email us for a full refund. No forms to fight.
See it in action
The daily cat protocol
One daily drop of B-vitamins and bioavailable heme iron, formulated for your cat's metabolism to support everyday energy, appetite and digestion.
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Welcome gifts ship free with your first order. Stay subscribed and a loyalty gift (a grooming kit) arrives with your month-3 box — no surprise charges, cancel or pause anytime.
Welcome kit — arrives with your first order
Welcome gifts ship free with your first order. Stay subscribed and a loyalty gift (a grooming kit) arrives with your month-3 box — no surprise charges, cancel or pause anytime.
In real homes
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Most do, without a fight. A few drops go over their normal wet food, a lick mat, or a treat. The heme iron makes it palatable, so there are no pills to force and no powder they walk away from.
It builds daily, it is not an overnight switch. Most owners tell us they notice the first changes around weeks two to three. With a senior cat, steady beats sudden.
A liquid blend of B-vitamins and gentle heme iron, made for cats. Heme iron is the form found naturally in meat, which is how cats are built to take iron on board. No fillers and no artificial flavours, made in a quality-controlled facility and checked batch to batch.
You are covered by a 60-day money-back guarantee, bottle empty or not. If you do not feel good about the difference, email us for a full refund. No forms to fight.
See it in action
Founding cohort
What owners are seeing
A drop on her food every morning, and within a couple of weeks she was waiting at the bowl before I had even put it down. She had got a bit picky over the past year, so seeing her eager for breakfast again was great. Her coat looks glossier too. The easiest thing I have added to her routine.
I had basically given up on supplements because he would spit pills straight back out and sulk for an hour afterwards. This one just goes on his wet food and he laps the whole lot up. No fight, no chasing him around the kitchen, no powder left in the bowl. A few weeks in he seems a bit brighter in himself, which is all I wanted.
A few weeks in and he is back on the windowsill in the mornings instead of staying curled up all day. He is up and about more in the afternoon too, following me from room to room like he used to. I was not expecting much at fourteen, so it has been a really nice surprise. Great to see a bit of spark in him again.
I was juggling a separate iron tub, a B-vitamin liquid and a coat oil, and honestly using none of them properly. Now it is one dropper, once a day, and she takes it without a single complaint. The cupboard is a lot tidier and so is my head. Simpler to keep up with means she actually gets it every day.
She is sixteen and the slow afternoons had quietly crept in over the past year. A month on the daily drop and there is a bit more life in her, puttering around the flat instead of sleeping the whole day away. Small thing, but it is the difference between a cat who is just there and one who is still part of the house. I am keeping her on it.
The dropper makes it effortless, which matters because I am not the most consistent person. One squeeze over breakfast and we are done for the day. Her bowl is getting cleared again like it used to be, and she has stopped leaving half of it. Easy enough that I actually remember to do it.
Our old boy had got fussy and a little flat, and the vet visits never turned up anything specific, just his age. We started the drops mostly hoping, and a few weeks on he is eating properly again and seems steadier through the day. He is not a kitten, but he is more himself. That is worth a lot to us.
I had read the label and liked that it was not a long list of fillers, just the actual vitamins and the iron. She took to the taste right away, which surprised me as she is normally suspicious of anything new. A couple of months in her coat feels softer and she has a bit more energy in the evenings. Glad I gave it a shot.
She had got into the habit of sleeping through to lunch, so I was not expecting much. A few weeks on the daily drop and she is back up on the sill in the mornings watching the birds like she used to. It goes on her breakfast without any fuss and she licks the bowl clean. Great to see a bit of her old routine again.
Years of traditional botanical use
Heme iron bioavailability
Named doses, no proprietary blends
Per bottle — a 30-day supply
Named Doses.
Real Heme Iron. Everyday Vitality.*
B-vitamins and bioavailable heme iron, made for your cat's metabolism.
What one daily drop covers
One drop. The whole cat.
A senior cat rarely has one neat problem. It is a few small things at once, all at the same time. Here is what one daily drop quietly supports, and why.
The slow mornings, the longer naps.
The heme-iron and B-vitamin core is the spark that turns food into energy. Thiamine gates how the cell makes that energy, and cats need two to four times more of it than dogs do.
Picking at the bowl she used to finish.
Vitamins B6 and B1 sit right at the appetite and metabolism workbench. They help the bowl actually become fuel, so a slowing senior keeps showing up for dinner.
Quietly off, somewhere you cannot see.
Folate is absorbed high in the small intestine, exactly where inflammation tends to settle first. It is the absorption anchor that helps the rest of the formula land.
The shine and softness fading.
Vitamin E is the lipid-soluble shield the coat reflects, and vitamin C recharges it. Aging is oxidative wear, and the coat is where you watch that balance hold.
The blood quality underneath it all.
Heme iron is the form a carnivore's gut actually takes up, through its own carrier instead of the irritating ferrous-salt route. It is the hematinic base the energy sits on.
Just not quite himself lately.
One daily drop keeps the building blocks arriving on a steady schedule. Built for everyday use, so support becomes the routine instead of a one-off scramble.
Inside every drop
Nine actives. Each with a job.
The breadth above is not magic. It is nine named ingredients, each doing one specific job, in doses built for a cat.
The carnivore-ready form of iron, absorbed through the gut's own heme pathway rather than competing for the acid-dependent route. As the metal at the center of hemoglobin and the muscle's oxygen stores, it supports healthy iron status and the steady oxygen delivery that keeps a senior cat moving. The hematinic base the rest of the formula is built on.†
Blood & Iron
An obligate-carnivore cat runs its liver hot, burning protein around the clock, and B6 is the cofactor that keeps that machinery turning. It is also the spark that lets stored iron be built into fresh hemoglobin, and it helps route waste toward glycine instead of oxalate. Supports healthy B-vitamin status and urinary tract function in senior cats.†
Energy
Cats need two to four times more thiamine per pound than dogs, and it is the most fragile of the B-vitamins, often thinned by cooking, processing, or a fish-heavy bowl. It sits at the gateway of cellular energy, turning food into the fuel that powers a hungry brain and a working heart. Supports healthy energy and appetite.†
Energy
Absorbed only in the upper gut, folate is the one-carbon donor that lets fast-renewing cells, from the intestinal lining to red-cell precursors, divide and mature on schedule. When the gut is working hard, it supports the continuous mucosal renewal that keeps digestion comfortable, working hand in hand with iron on healthy blood. Supports healthy digestion in adult and senior cats.†
Digestion
The body's principal fat-soluble antioxidant, guarding the polyunsaturated fats in every cell membrane, and the fat stores themselves, from oxidation. It matters most for fish-fed and raw-fed cats, whose richer fat diets ask more of their antioxidant reserve. Supports healthy adipose tissue, immune function, and, alongside B6 and iron, a healthy coat.†
Coat & Antioxidant
Cats make their own vitamin C, so this is not about filling a gap. Its job here is partnership: ascorbate recharges spent vitamin E back to its active form, keeping the antioxidant relay running when an older cat's oxidative load climbs. Part of an antioxidant blend that supports balance in senior cats.†
Coat & Antioxidant
A traditional cardiovascular botanical whose procyanidins gently support the endothelium's own nitric-oxide signaling and easy vessel tone. Carried at a structure-function level, it supports healthy cardiovascular function in mature cats as part of the formula's mature-cat botanical layer. Not a substitute for veterinary cardiac care.†
Mature-Cat Botanicals
A classical botanical whose paeoniflorin carries calming, anti-inflammatory activity across the gut and connective tissue. Within the formula it adds a soothing, mucosal-friendly note that supports comfortable digestion and a calm, settled senior cat. A mature-cat botanical that complements the B-vitamin and iron core.†
Mature-Cat Botanicals
Known in traditional practice as a blood-nourishing root, Dong Quai rounds out the formula's blood-and-iron foundation. Its polysaccharides are the classical tonic complement to heme iron's substrate, included as part of a complete, mature-cat approach to healthy blood and vitality. A botanical for adult and senior cats, not for kittens, pregnant queens, or cats on heart or blood-thinning medication without veterinary guidance.†
Blood & IronOne bottle. A few drops.
No pills to force, no powders to mix. Just drops, once a day.
Squeeze the bulb and draw up the deep-amber liquid. That color is the heme-iron base, the part doing the real work.
Drip it over wet food, onto a lick mat, or straight into her mouth. The heme keeps it palatable, so she actually takes it.
One dose, same time each day. With a senior cat, steady wins. The building blocks just keep arriving.
NUTRIBIAL
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60-day money-back guarantee
Questions, answered
Nutribial is a once-daily liquid dropper for cats that brings nine ingredients into one bottle: bioavailable heme iron, the energy and appetite B-vitamins (B1, B6 and B9), and an antioxidant pairing of vitamins E and C. It's a designed daily protocol, so you get one bottle instead of buying these ingredients separately. It supports healthy iron status, energy, appetite, coat and senior wellness.
As cats age, the everyday things start to slip: the energy at the bowl, the appetite, the shine in the coat. Nutribial feeds the building blocks behind those things every day. Heme iron is the form a carnivore's gut actually absorbs (it enters through its own carrier instead of the irritating ferrous-salt route), and thiamine matters because cats need two to four times more of it than dogs. Together they help turn food into the energy your cat runs on, supporting healthy senior wellness as part of the daily routine.
Nutribial supports healthy iron status and energy levels, a healthy appetite, healthy digestion, a healthy coat and skin, and antioxidant balance in senior cats. These are structure-function support claims: Nutribial is a daily supplement, not a medicine, and it isn't intended to diagnose, treat, cure or prevent any disease.
One daily dropper. The heme iron is palatable, so most cats take it straight onto wet food, mixed into a little broth, or gently by mouth. Give it at the same time each day and it becomes part of the routine. No pills, no powders, no fuss.
Nutribial is a structure-function supplement made for cats, with nine named ingredients and no hidden blends. As with any supplement, speak to your vet first if your cat is a kitten, is pregnant or nursing, has a heart condition, has a history of calcium-oxalate stones, or is on cardiac or anticoagulant medication. We disclose these openly rather than hide them.
Nutribial is backed by a 90-day money-back guarantee, so the risk is on us, not you. Give it an honest daily try, and if you're not happy, contact us within 90 days for a full refund. Choose a monthly plan at checkout and your bottle ships on a regular schedule, so you never run out mid-routine. You're in control: pause, change your delivery date, or cancel anytime from your account.
Week by week
This isn't a pill you'll fight her over, and it isn't a one-week fix you forget by month's end. It's one drop a day, and because the nutrients arrive on a steady schedule instead of in fits and starts, the small things tend to build rather than spike and fade. Here's how the weeks usually go.
She's jumping back up on the bed
She'd stopped getting up on the bed at night and I figured her back legs were just getting old. About three weeks on the drop and I woke up to her curled on my feet again. I'd quietly stopped expecting that.
No more wrestling a pill every morning
That alone was worth it. He used to clamp his mouth shut at the sight of a tablet, and now the drop just goes on his food and he gets on with breakfast.
I'd written it off as her age
I'd been calling the slow afternoons her age for the best part of a year. A month on the daily drop and she's up on the windowsill before I'm even out of bed. Turns out it wasn't only her age after all.
Even our fussy eater takes it fine
Our older boy is famously picky, so we were ready for a battle. Instead he takes it without a second glance once it's mixed into his wet food.
I noticed by about day ten
I wasn't expecting anything fast, but by around day ten he was clearing his breakfast again instead of leaving half. It just goes on the food, so I'd have kept it up anyway, but seeing it that quickly kept me going.
Two cats, no drama
Both of mine get a drop on their wet food and neither has noticed. Sorting two cats every day used to be a hassle and this just isn't.
The dropper makes it simple
I was worried about getting the amount right, but the dropper is straightforward and he laps it up once it's mixed into his food.
He's sixteen, I almost didn't bother
I'd talked myself into thinking sixteen was too old for anything to make a difference. A few weeks in he's bolting over when I shake the bowl, the way he did years ago. Glad I didn't talk myself out of it.
Simple to keep up with
One bottle, one drop a day, no powders or pills to hide. It's an easy thing to stay consistent with, and that was the whole point for me.
Week 1
It goes in without a fight
Most cats take the drop straight off their wet food in the first few days. No pill to hide, no powder left in the bowl, no chasing her around the kitchen. From the very first morning, the nutrients are arriving.
There's no loading phase. From day one the heme iron and B-vitamins land in the bowl on a fixed daily schedule, so the supply is steady instead of stop-start.
Week 2
The first signs of more in the day
With the B-vitamins and heme iron arriving every morning, owners often notice the flat patches lift first: a bit more interest at the bowl, a bit more about during the day.
B1 and B6 sit at the workbench where food becomes usable energy, and cats need far more thiamine than dogs do. Topping it up every day is what keeps that supply even instead of dipping between meals.
Week 3
The part you can actually see
Coat and condition are usually where owners point first: the shine coming back, the softness under your hand when she settles on your lap.
Vitamin E shields the coat and vitamin C keeps recharging it. Around three weeks of steady antioxidant support is when that balance tends to start showing on the outside.
Week 4+
More herself, and staying that way
This is where it stops being something you're trying and becomes part of looking after the cat you've still got: back up in the window in the mornings, meeting you at the door, the bowl cleared again.
Built for daily use. The drop keeps the building blocks arriving on schedule, so the steadiness holds instead of fading the week you stop. One bottle doing the job of the separate tubs you used to forget.
