Cat Throwing Up for Two or Three Days in a Row
By Dr. Zubair Khalid, DVM, MS, PhD ·
A cat throwing up two days in a row is past the point where most veterinarians would simply wait and see. Occasional vomiting can be normal in cats, but vomiting that repeats day after day suggests something is irritating the stomach, the intestines, or another organ system. This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- Vomiting that lasts less than 1 to 2 days with no other signs may only need supportive care, but once it stretches to 2 or 3 days, a vet exam is warranted [1].
- A cat that vomits more than once per week, or that also seems tired, weak, or off its food, should be seen promptly [2].
- Hairballs are a common and usually harmless cause of occasional vomiting, but a hairball every week or two is different from vomiting several times a day [2].
- Stop offering food for now, but do not withhold water unless your veterinarian tells you to and provides fluids another way [1].
- Call your vet today if your cat is vomiting repeatedly, and go to an emergency clinic now if you see blood, a swollen belly, collapse, or unproductive retching.
What Repeated Daily Vomiting Looks Like
Vomiting is an active process. Your cat's belly muscles tighten, the head drops, and food, fluid, or foam comes up. That is different from regurgitation, which is a passive spill of undigested food with no effort. The distinction matters because it points your veterinarian toward different parts of the digestive tract.
Owners often describe a pattern like this. The cat vomits once in the morning, seems fine, eats, then vomits again that evening. The next day brings two or three more episodes. Sometimes there is food in the vomit. Sometimes it is yellow bile, clear fluid, or foam. Sometimes there is a hairball mixed in.
A single vomit now and then is common in cats. A hairball once every week or two is also common and usually does not signal a lasting problem [2]. What raises concern is frequency and duration. Vomiting more often than once or twice daily, or vomiting that keeps going for several days, needs a closer look [1].
Some cats vomit twice a week for months and their owners assume it is normal. It usually is not. A cat that vomits more frequently than once per week should be evaluated by a veterinarian promptly, especially if there are other changes [2].
Main Causes of a Cat Throwing Up Multiple Times in a Row
The list of possible causes is long, and many of them look identical from the outside. Here are the categories veterinarians think about first.
| Cause | Typical clues | How urgent |
|---|---|---|
| Dietary upset or eating too fast | Vomiting soon after meals, undigested food, normal energy between episodes | Routine visit if it lasts more than 2 days |
| Hairballs | Damp cylindrical wad of hair, vomiting every week or two, otherwise well [2] | Routine, but watch for blockage signs |
| Intestinal foreign body | Sudden vomiting, no appetite, may have a painful or bloated belly, no bowel movement | Emergency |
| Gastrointestinal infection or inflammation | Vomiting with diarrhea, low appetite, sometimes fever | Same-day visit |
| Chronic GI disease (long-term inflammation, lymphoma) | Weeks to months of intermittent vomiting, weight loss, picky appetite | Prompt exam and testing |
| Organ disease (kidney, liver, pancreas) | Increased thirst, increased or decreased urination, weight loss, yellow gums [2] | Same-day to emergency |
| Toxin or medication reaction | Known exposure, sudden onset, may include drooling or tremors | Emergency |
Foreign bodies deserve special mention. Cats swallow string, hair ties, toy parts, and bones. A swallowed object can lodge in the intestine and cause a blockage. One reported case involved a 1-year-old cat with a 5-day history of vomiting and no appetite. Imaging found a doughnut-shaped foreign object in the upper small intestine that was pressing on the bile duct and causing jaundice. Surgery removed it, and the cat recovered fully [3]. That case shows how a single swallowed object can create serious, but treatable, problems.
Vomiting can also be a side effect of medications. In cats, certain sedatives and pain drugs commonly trigger nausea and vomiting, and anti-nausea drugs such as maropitant are used to reduce that risk [4]. If your cat started a new medication and then began vomiting, tell your veterinarian.
Red Flags That Mean Emergency
Some signs mean you should stop reading and call an emergency clinic.
- Blood in the vomit, whether bright red or dark like coffee grounds [1]
- A belly that looks swollen or feels painful when touched [1]
- Weakness, collapse, or trouble standing [1]
- Unproductive retching, where your cat heaves but nothing comes up
- Vomiting plus diarrhea together, especially in a kitten or senior cat [2]
- Yellow gums, eyes, or skin
- Known or suspected exposure to a toxin, human medication, or a foreign object
- Vomiting that continues after 24 hours of no food [1]
Dehydration is a real risk with repeated vomiting. Signs include tacky gums, skin that stays tented when gently pinched, sunken eyes, and heavy lethargy. Cats with kidney or heart disease can dehydrate faster and may need intravenous fluids in the hospital [1].
Safe Things You Can Do at Home While You Wait
Home care has limits. It buys time, it does not replace an exam.
Withhold food, not water. For short-term vomiting, the usual approach is to rest the digestive system by withholding food for 24 hours [1]. Do not withhold water unless your veterinarian instructs you to and provides fluids under the skin or into a vein. Dehydration and other problems are expected with vomiting, and cutting off water makes them worse [1].
Call your vet before you change anything. If your cat has kidney or heart disease, or is on medication, ask first. Those cats may need hospital fluids during a food fast [1].
After the fast, reintroduce food slowly. If vomiting has stopped after 24 hours, offer small amounts of water first. If nothing comes up, resume feeding gradually in small, frequent meals [1].
Keep a simple log. Write down the time of each vomit, what it looked like, whether food or hair was present, and whether your cat ate, drank, peed, and pooped. This record is genuinely useful at the appointment.
Do not give human anti-nausea drugs. Doses for cats are calculated by the veterinarian based on your cat's weight and health. Some human medications are toxic to cats.
Separate food from other pets. If you have multiple cats, you may not know who is eating and who is vomiting. Feed them in separate rooms for a few days.
If your cat vomits undigested food shortly after eating, that pattern has its own set of causes worth reading about in Cat Vomiting Undigested Food Hours Later. If meals seem to disappear in seconds, see Cat Vomiting After Eating Too Fast: When to Slow Down and When to Call.
What Your Veterinarian Will Check and Test
The exam starts with questions and hands-on assessment. Your vet will check hydration, gum color, abdominal comfort, weight, and temperature. They will ask about diet, hairballs, medications, possible exposures, and whether diarrhea is present.
Basic testing often includes blood work, a fecal exam, and a urine test, plus abdominal x-rays and ultrasound [1]. These look for foreign objects, organ changes, inflammation, and signs of blockage.
If those tests do not explain the vomiting, endoscopy and biopsy of the stomach and small intestine may be the only way to identify the cause [1]. This is common with chronic vomiting that has gone on for weeks or months.
Treatment depends on the cause. Short-term vomiting with no other signs may only need supportive care to relieve symptoms [1]. Long-term vomiting, vomiting more than once or twice daily, or vomiting with blood, pain, depression, dehydration, weakness, fever, or weight loss requires a detailed workup, and some causes are life-threatening [1].
Anti-nausea medications are part of many treatment plans. A review of controlled studies found that maropitant reduced vomiting risk in cats compared with no treatment [4]. Your veterinarian will choose a drug and dose based on your cat's weight, condition, and other medications.
Preventing and Monitoring Repeat Vomiting
Prevention depends on what caused it. For hairball-prone cats, regular brushing and hairball diets help. For fast eaters, smaller meals spread through the day help. For food-sensitive cats, a diet trial may be needed.
Monitoring matters as much as prevention. Weigh your cat monthly. A slow drop in weight is easy to miss and often signals chronic disease. Track vomiting frequency in a notebook or phone app. If your cat vomits twice a week for a month, that is a pattern worth a vet visit, even if your cat seems happy [2].
Watch the litter box too. Increased thirst, increased or decreased urination, and diarrhea alongside vomiting all point toward a systemic problem instead of a simple stomach upset [2]. A cat with diarrhea two days in a row plus vomiting should be seen promptly.
If your cat vomits once and then acts completely normal, that is a different situation. You can read more about that pattern in Cat Vomiting Once and Acting Normal: When to Monitor and When to Call.
Limitations and When to Contact a Veterinarian
This article cannot tell you what is wrong with your specific cat. Only a veterinarian who examines your cat can do that. Individual cases need a veterinarian, and the timing below is a general guide.
Call an emergency clinic now if you see: blood in the vomit, a painful or swollen belly, collapse or severe weakness, unproductive retching, yellow gums or eyes, known toxin exposure, or vomiting with severe diarrhea in a kitten or senior cat [1][2].
Call your regular veterinarian the same day if: your cat has vomited multiple times in a row today, has vomited for 2 or 3 days, is not eating, seems depressed, or has vomiting plus diarrhea [1][2].
Schedule a routine visit soon if: your cat vomits more than once a week, has vomited twice a week for several weeks, is losing weight slowly, or has a long history of intermittent vomiting [1][2].
Do not wait for a week of vomiting to pass before calling. Long-term vomiting and vomiting with other signs can point to life-threatening causes, and earlier diagnosis usually means simpler treatment [1].
Frequently Asked Questions
Should I withhold food if my cat has been vomiting for two days?
For short-term vomiting, the usual approach is to rest the digestive system by withholding food for 24 hours, but this applies to vomiting that has lasted less than 1 to 2 days [1]. Once vomiting has gone on for 2 or 3 days, your cat needs an exam instead of more home fasting. Ask your veterinarian before you fast your cat, especially if it has kidney or heart disease.
Is it normal for a cat to throw up a hairball every week?
A hairball once every week or two is common and usually does not cause lasting problems [2]. Vomiting more often than once per week is a different story and should be checked by a veterinarian [2]. Also watch for a cat that strains to bring up a hairball and cannot, since a clump of hair that moves into the intestine can cause a dangerous blockage [2].
Can I give my cat human anti-nausea medicine?
No, do not give human medication without veterinary direction. Doses for cats are calculated by your veterinarian from your cat's weight and health status, and some human drugs are toxic to cats. If your cat needs an anti-nausea drug, your veterinarian will pick one that is safe and appropriate.
What if my cat is vomiting but still eating and playing?
A cat that vomits and still eats and plays is less concerning than one that is lethargic and off food, but it is not automatically fine. Vomiting more than once per week, or vomiting that continues for several days, still deserves a vet visit [1][2]. Keep a log of how often it happens so your veterinarian has real data to work with.
How long can I safely wait before calling the vet?
If vomiting has lasted less than 1 to 2 days and there are no other signs, supportive care at home may be enough [1]. Once you reach 2 or 3 days, or if any other sign appears, call your veterinarian. Vomiting with blood, pain, depression, dehydration, weakness, fever, or weight loss needs a detailed exam because some causes are life-threatening [1].
Related Articles
- Cat Vomiting After Eating Too Fast: When to Slow Down and When to Call
- Cat Vomiting Undigested Food Hours Later
- Cat Throwing Up Food Undigested
- My Cat Is Throwing Up Undigested Food
- Cat Vomiting Once and Acting Normal: When to Monitor and When to Call
- Cat Vomiting Yellow Liquid Multiple Times
- Cat Throwing Up Every Day: Causes and Red Flags
- Cat Throwing Up but Acting Normal: When to See a Vet
- How to Stop Your Cat Throwing Up: Causes and Next Steps
References
- Vomiting in Cats - Cat Owners. Merck Veterinary Manual.
- Vomiting. Cornell University College of Veterinary Medicine.
- Rare case of extrahepatic biliary obstruction caused by a duodenal foreign body in a cat. JFMS open reports, 2025.
- Receptor-Targeted Antiemetic Strategies in Cats: A Systematic Review and Intervention-Specific Meta-Analysis. Veterinary medicine and science, 2026.