First 24 hours after veterinary treatment
Right now, the priority is helping your cat transition back to her normal routine without triggering another vomiting episode. Stick to the vet's prescribed bland diet—often boiled chicken or white fish with plain rice—in teaspoon-sized portions every few hours. If she keeps these down for six hours, you can gradually increase the amount. Avoid her regular food for at least a day to let her stomach settle completely.
Hydration is equally critical after vomiting. Provide fresh water in a shallow bowl, and watch for her lapping at it normally. Dehydrated cats may show tacky gums or skin that tents when gently pinched. If she’s not drinking by herself within 12 hours post-treatment, dab a few drops of water on her lips with your finger to encourage her.
Litter box clues during recovery
The litter box is your early warning system. Check for normal urination (twice daily minimum) and formed stools returning within two days. Diarrhea or unusually small, hard stools suggest her gut is still irritated. Missing a single bowel movement isn’t alarming yet, but combined with lethargy, it warrants a callback to your vet.
Also monitor the vomit itself if she has another episode. Yellow bile or froth means her stomach is empty, while undigested food implies she ate too quickly. Red streaks or coffee-ground textures are emergencies—call the vet immediately, as these signal internal bleeding from prolonged irritation.
Behavior milestones over the next three days
By day two, she should show interest in her surroundings—greeting you, playing lightly, or grooming herself. A cat who stays hunched in a corner or hides under furniture is likely still nauseous. Don’t force interaction, but note if she responds to familiar sounds like treat bags or her name.
Appetite should steadily improve. If she snubs even favorite treats by the 48-hour mark, ask your vet about appetite stimulants. Conversely, ravenous hunger right away isn’t ideal either—it might lead to overeating and more vomiting. Offer measured portions on schedule rather than free-feeding.
When to escalate care post-treatment
Backslide symptoms demand quick action. Vomiting more than twice in a day, refusing all food for over 24 hours, or acting disoriented means she needs reevaluation. Small cats dehydrate faster than dogs—sunken eyes or weakness when jumping down from furniture are late signs.
Less obvious red flags include rapid weight loss (feel along her spine—vertebrae shouldn’t protrude sharply) or changes in breathing patterns. Panting, open-mouth breathing, or exaggerated belly movements in a resting cat suggest pain or systemic illness brewing. Trust your instincts—you know her normal better than any checklist.
The full verdict, portion guidance and serving notes are collected on the Mussels food facts page.