She's still throwing up yellow foam every morning. Nobody checked her bile.
Add one scoop (250mg) of PureFelis to your cat's food once daily. Mix it in before serving.
It dissolves completely. No smell, no taste. Your cat won't notice it.
Works with wet food, raw food, broth, or dry kibble with added water.
For cats managing a diagnosed condition or on prescription medication, ask your vet before starting.
Store in a cool, dry place with the lid closed.
Your guarantee starts the day your order is delivered — not the day you placed it.
If you are not satisfied for any reason within 30 days of delivery, email us at support@purefelis.com and we will refund your full purchase price.
You do not need to return the product. You do not need to explain why. There are no conditions, no hoops, and no exclusions. One email is all it takes.
Refunds are processed within 2 business days of your request. Your bank may take an additional 3–5 business days to post the credit.
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Bile is made in the liver, not the stomach. Acid reducers never reach it — which is why famotidine can help at first and then fade.
Some bile never gets bound to taurine. That unbound bile sits in her empty stomach overnight and irritates the lining. The empty stomach is the trigger. The unbound bile is the cause.
Cats can't make enough on their own. High heat destroys taurine during cooking, so makers spray some back on afterward — enough to clear a decades-old minimum. And she spends taurine every day through the bile itself.4
In 1987, UC Davis researchers published in Science that cats were going blind and dying of heart failure from taurine deficiency — in food that met the standards of the day. It's why every bag has taurine in it now.
Check its label — if maltodextrin or starch is listed, most of that scoop was never taurine. And it was dosed for general heart-and-eye maintenance, the only job the category was ever built for.
When taurine runs short, a dog switches to glycine. A cat can't — taurine is close to her only option. That's why a shortfall shows up as 4am foam instead of nothing at all.

One ingredient: the amino acid her bile chemistry needs. Nothing else in the tub.
Based on a leading US cat taurine powder's published label: 500 mg taurine per 3 g scoop.
Go check the tub of the taurine you already tried. If maltodextrin, rice flour, or starch is on the label, most of that scoop was never taurine.

The category was built around general heart-and-eye maintenance. That's a different job, and a different amount.

Four seconds into her bowl. Nothing about your other cat's diet has to change.

The long stretch overnight is when the trouble starts, so the evening meal is the one to dose. Follow the amount printed on your tub label.
None of it was wrong. Most of it was aimed at timing or acid — not at what's actually in the bile.
That test checks her organs, and clean results are real good news — the scary stuff isn't there. But it doesn't measure whether her bile left the liver bound to taurine. It can't clear what it never checked.
And 'some cats just vomit' isn't settled either. In 2013, feline specialist Gary Norsworthy published 100 cases in JAVMA arguing that a cat vomiting more than twice a month isn't normal. Yours does it most mornings.
Pepcid lowers stomach acid. But this is bile, and bile comes from the liver — a stomach medicine never reaches it. That's why it helped at first and then faded.
Feeding her late makes the empty stretch shorter, which is why it can help for a while. It doesn't change what the bile is made of — and her stomach empties out eventually every night.
A shared feeder can't feed just one cat, so for a lot of two-cat homes it's not even an option. A scoop into her own bowl is.
Taurine gets used up every day, so it's given every day. Give it a full month — and write down each morning, because memory blurs the bad ones.Taurine gets used up every day, so it's given every day.

Nothing visible yet. Taurine is reaching her liver and starting to bind the bile she makes overnight. Keep giving her the scoop at dinner.

You may notice fewer mornings with foam. Six a week might become three.

Compare it to where you started. If nothing changed, your 30 days are still open — ask for your money back.
PureFelis is for a healthy cat who throws up foam early in the morning, before she's eaten. If any of these are true instead, close this page and call your vet — that needs a real check-up, not a supplement.
One more thing, and it costs us money to say it. In Gary Norsworthy's 2013 JAVMA series, the cats studied were ones already vomiting chronically — and most of them turned out to have something, with a thickened bowel showing on ultrasound. So if she's never had one, get the ultrasound before you buy anything from us. We mean that.
A healthy cat, clean tests, and a symptom that keeps coming back every morning isn't a closed case. It's a question nobody answered.
Here's the answer. Here's what her body was missing. And here's 30 days to find out if that was it.
One order, one charge. Your 30 days start the day the tub arrives.

1 - Individual results vary. Nothing on this page is a promise of a specific outcome for a specific cat.
2 - Free shipping applies to orders over $50. Orders under $50 ship for $4.99.
3 - PureFelis is a taurine supplement for otherwise-healthy adult cats. It is not a drug and is not intended to diagnose, treat, cure, or prevent any disease. Persistent or worsening vomiting warrants a veterinary examination.