Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My 3 kg cat licked the sticky side of a used 7 mg nicotine patch I left on the nightstand — is that tiny exposure an emergency right now?

Cats · Toxicity calculator

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, treat it as an emergency. Nicotine is absorbed rapidly through mucous membranes, and a used patch still contains significant residue — for a 3 kg cat, even a lick can deliver a toxic dose. Signs like drooling, vomiting, or agitation can start within 15 minutes. Do not wait. Call your vet or the ASPCA poison line at 888-426-4435 immediately, and bring the patch packaging so they can see the strength. Watch her closely for tremors or wobbliness while you arrange help.

Why is nicotine so dangerous for pets?

Nicotine is a fast-acting stimulant toxin: it over-excites nerves, then blocks them, causing tremors, seizures and heart rhythm problems. Poisoning can begin within 15–60 minutes, so speed matters.

About the dose levels
Symptoms are possible above roughly 1 mg/kg; severe poisoning above 4–5 mg/kg. These bands are a guide — nicotine products vary a lot in concentration.

Signs to watch for

  • Excitement, drooling, vomiting and diarrhoea (first 15–60 min)
  • Rapid heart rate, then slowed heart rate
  • Tremors, twitching, seizures
  • Wobbliness, collapse, shallow breathing
  • Death in severe untreated cases

What to do right now

  1. Call your vet immediately — nicotine acts fast.
  2. Bring the product so the vet can read the nicotine strength on the label.
  3. Do not wait for symptoms; vomiting can be induced if the vet says it is safe and ingestion was recent.
  4. Watch the pet for at least 4 hours even if it looks fine at first.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

For a dose worked out against your pet's weight, use the Nicotine Toxicity Calculator.

Open the full calculator: Nicotine Toxicity Calculator →