The first night after vet treatment for caffeine
Your cat's system is working through both the caffeine and any medications the vet administered. Expect her to be quieter than usual tonight—the sedative effects of IV fluids and potential anti-nausea drugs can last 8-12 hours. Keep her in a dim, warm room without stairs or high perches, as coordination might still be slightly impaired. Check her gums every few hours; they should stay pink, not pale or blue-tinged.
While she sleeps, listen for changes in breathing patterns. Caffeine can cause delayed respiratory effects even after initial treatment. Normal cat respiration is 20-30 breaths per minute at rest; count her sides rising for 15 seconds and multiply by four. Have your vet's after-hours number ready if you notice rapid shallow breaths (over 40/min) or see her abdomen heaving.
Spotting rebound symptoms in a 5 kg cat
Smaller cats process stimulants faster than dogs but also reach toxic thresholds quicker. What seems like improvement at hour 6 could shift as her liver metabolizes remaining caffeine. Set alarms to check for subtle tremors—place a hand on her back while she's resting to feel for muscle twitches you might miss visually. Excessive licking of lips or sudden head shaking can signal nausea returning.
Her litter box use matters now more than usual. Caffeine is a diuretic, so she should produce urine within 12 hours post-treatment. Note the volume and color—dark yellow or orange urine means she needs more fluids. Mix extra water into her food or offer tuna juice ice cubes if she refuses drinking. No urine for 18+ hours requires immediate vet callback.
Food and water strategies for recovery
Start with tablespoon-sized portions of bland food every 3-4 hours once she's alert. The vet's medications may have left a metallic taste in her mouth, so warming the food slightly can enhance smell appeal. Avoid fish flavors initially—their strong odor sometimes triggers vomiting in sensitive cats. Use the same brand she had before the incident to avoid new variables.
Hydration is critical to flush residual caffeine. If she's reluctant to drink, wipe her gums with a wet cloth or offer broth from boiled chicken (no onions or seasoning). Watch the water bowl for lapping motions without actual swallowing—this can indicate mouth discomfort from earlier vomiting. A syringe with 5 ml of water every hour may help if she's dehydrated but refusing fluids.
When to resume normal activity
Most cats bounce back within 36 hours, but yours had enough caffeine to need professional care. Wait until she shows interest in toys or window watching—two signs the stimulant effects have truly passed. Delay returning to free outdoor access for at least 48 hours; elevated heart rate outdoors could strain her cardiovascular system.
Keep other pets separated if they normally play rough. Her reflexes might still be delayed, increasing injury risk. Note any changes in sleep patterns over the next week—prolonged lethargy or sudden nighttime hyperactivity could indicate lingering effects. Mark your calendar for a vet wellness check in two weeks to review liver enzymes if she had severe symptoms initially.
The full verdict, portion guidance and serving notes are collected on the Tea leaves & teabags food facts page.