What should a cat do after a flea injection? - briefly
Observe the cat for swelling, redness, or signs of discomfort at the injection site and restrict vigorous activity and bathing for the next 24‑48 hours. Contact a veterinarian promptly if vomiting, extreme lethargy, or severe swelling develop.
What should a cat do after a flea injection? - in detail
After a flea‑preventive injection is given, observe the cat for at least 15 minutes in a quiet area. Watch the injection site for swelling, redness, or discharge; any sign of irritation should be reported to the veterinarian.
Provide fresh water and a normal meal. Do not force feeding, but allow the cat to eat at its own pace. Avoid bathing or applying topical products for 24 hours, as the skin may be more sensitive.
Record any of the following within the first 24 hours and contact a vet if they appear:
- Vomiting or diarrhea
- Excessive drooling
- Lethargy or weakness
- Hives, itching, or sudden scratching
- Fever (temperature above 103 °F / 39.5 °C)
Maintain a calm environment; limit vigorous play or stressful situations for the next day. Keep the cat indoors if possible to reduce exposure to additional parasites while the medication takes effect.
Follow the veterinarian’s schedule for booster injections. Note the date of the first dose and set reminders for the next administration, typically every 12 weeks, depending on the product used. Ensure the cat’s health records reflect the injection date and any observed reactions.