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Feline Gastritis Complete Guide - Vomiting Frequency Chart & 7-Day Diet Recovery
Covers acute vs chronic gastritis, vomiting frequency severity chart, when to see a vet, and a concrete 7-day dietary recovery plan with specific meal guidelines.
Mar 10, 2026
What is Feline Gastritis?
Feline gastritis is inflammation of the stomach lining. It comes in two forms — acute and chronic — and each has different causes and management needs. According to Cornell Feline Health Center, a large portion of cat vomiting is gastritis-related, and identifying the cause is key to preventing it from coming back.
Feline Gastritis
Acute vs Chronic Gastritis Comparison
| Type | Duration | Main Causes | Recovery | Vet Required |
|---|---|---|---|---|
| Acute | 24–72 hours | Spoiled food, foreign body, diet change | Self-resolves in 1–3 days | If symptoms persist |
| Chronic | 3+ weeks | Food allergy, underlying disease, medications | Requires ongoing management | Always required |
Severity Classification by Vomiting Frequency
| Vomiting Frequency | Severity | Action |
|---|---|---|
| 1–2 times/week | Mild | Check diet, slow feeding |
| 3–5 times/week | Moderate | Vet visit within 1 week |
| 2+ times/day | Severe | Vet visit within 48 hours |
| Bloody vomit | Emergency | Immediate vet |
6 Main Causes of Gastritis
- Spoiled food or an abrupt switch to a new diet
- Foreign body ingestion — hairballs, thread, grass, you name it
- Medication side effects, especially NSAIDs
- Food allergy or intolerance — protein source is the most common culprit
- Toxin buildup from kidney or liver disease
- Helicobacter infection (its clinical significance in cats is still debated)
7-Day Dietary Recovery Plan
| Period | Diet Method | Meal Size | Frequency |
|---|---|---|---|
| Day 1–2 | Fasting or water only (per vet guidance) | — | — |
| Day 3–4 | Prescription wet food or boiled chicken broth | 25% of normal portion | 4–5 times/day |
| Day 5–6 | Easily digestible wet food | 50% of normal portion | 3–4 times/day |
| Day 7+ | Gradual return to regular food | 75–100% of normal portion | 2–3 times/day |
Diagnosis & Veterinary Treatment Options
- Blood panel: checks kidney and liver function and infection markers
- Abdominal ultrasound: checks stomach wall thickness and foreign bodies
- Endoscopy + biopsy: confirms the underlying cause of chronic gastritis
- Acid suppressors like omeprazole: protect the stomach lining
- Antiemetics like maropitant: cut down on nausea
- IV fluids: correct dehydration
When to See a Vet Immediately
- Blood in vomit — bright red or coffee-ground appearance means go now
- Not eating or drinking for 24+ hours
- Extreme lethargy or lying with belly pressed to the floor
- Weight loss of 10%+ within 1–2 weeks
- Abdominal bloating combined with vomiting — possible bowel obstruction
Want to keep tabs on your cat's weight and digestive health together? Try the Nutrition Planner.
※ This article is for informational purposes only. Always consult a licensed veterinarian for your cat's diagnosis and treatment.