Updated July 2026
If your dog has eaten a cigarette, cigarette butt, loose tobacco or another product containing nicotine, contact your vet straight away.
Do this even if your dog appears completely normal.
Nicotine can affect dogs quickly, and the level of risk depends on the product, the amount involved, how the exposure happened and your dog’s size. Do not try to calculate whether the amount was safe or wait for symptoms to develop.
You should also seek advice after exposure to:
- cigarette butts
- cigars or loose tobacco
- nicotine pouches
- nicotine gum
- nicotine patches
- chewing tobacco
- cigarettes or tobacco from an ashtray
- vapes and e-cigarettes
- vape cartridges and refill bottles
- nicotine-containing e-liquid
Animal PoisonLine advises that nicotine exposure can cause symptoms rapidly. PDSA also advises owners to contact their vet as soon as possible after a pet has eaten something potentially poisonous. (
Quick answer: what should I do now?
- Remove the cigarette, tobacco or nicotine product so your dog cannot eat any more.
- Telephone your vet or the emergency veterinary service used by your practice.
- Tell them what your dog may have eaten, approximately how much, when it happened and your dog’s weight.
- Keep the packaging, container or remaining product. Take it with you or photograph the label so your vet can see the ingredients and nicotine strength.
- Do not try to make your dog vomit unless a veterinary professional specifically instructs you to do so.
- Do not give salt water, hydrogen peroxide, milk, oil, food or another home remedy in an attempt to treat the poisoning.
- Follow the instructions given by your vet or Animal PoisonLine.
Never wait for symptoms before seeking help. Some signs of poisoning may appear immediately, while others can take longer to become noticeable. Trying to make a dog vomit at home can sometimes cause additional harm.
Why nicotine is dangerous to dogs
Nicotine affects the nervous system and can also cause changes in heart rate, behaviour, coordination and digestion.
The amount of nicotine in different products varies considerably. A used cigarette butt, an unused cigarette, loose tobacco and concentrated vape liquid do not present identical risks.
Your dog’s weight and the amount swallowed also matter. However, these factors should be assessed by a veterinary professional rather than used to decide whether veterinary advice is necessary.
Online calculations cannot reliably account for:
- the nicotine strength of the particular product
- how much your dog actually swallowed
- whether your dog chewed or only mouthed the item
- whether any liquid leaked onto the mouth or skin
- how much time has passed
- your dog’s size, age and health
- other ingredients in the product
Treat any suspected nicotine ingestion seriously and telephone your vet.
Signs of nicotine poisoning in dogs
Possible symptoms include:
- drooling
- vomiting
- diarrhoea
- unusual tiredness
- restlessness or agitation
- hyperactivity
- weakness
- wobbliness or poor coordination
- shaking or tremors
- changes in heart rate
- unusual breathing
- collapse
- seizures in severe cases
A dog may not develop every symptom.
Animal PoisonLine reports that signs can appear rapidly and may include lethargy, drooling, vomiting, diarrhoea, changes in heart rate, agitation, hyperactivity and tremors. The severity depends on the product and the level of exposure.
If your dog is struggling to breathe, having a seizure, collapsing or becoming unresponsive, treat it as an immediate emergency and travel to the veterinary practice while someone telephones ahead where possible.
What if my dog ate a cigarette but is acting normally?
Telephone your vet even when your dog seems fine.
This is particularly important because people searching for help often assume that normal behaviour means the danger has passed. That is not a safe assumption.
Your vet may decide that the exposure is low risk, but that decision should be based on the product, amount, timing and your dog’s details.
Do not wait until your dog begins vomiting, shaking or behaving unusually.
What if my dog ate half a cigarette?
Contact your vet.
There is no reliable household rule that says half a cigarette, one cigarette butt or a particular quantity is safe for every dog.
A small dog and a large dog may be affected differently. The nicotine content also varies between products, while it may be difficult to know exactly how much was swallowed.
Tell the vet:
- whether the cigarette was used or unused
- whether it had a filter
- approximately how much is missing
- when it happened
- your dog’s approximate weight
- whether your dog has shown any symptoms
Are cigarette butts dangerous to dogs?
Yes. Cigarette butts can contain nicotine and other residues.
They are frequently found on pavements, around benches, in parks, outside pubs and in gardens. A dog investigating discarded food or litter may swallow one before the owner has time to intervene.
Ashtrays can present an additional risk because they may contain several cigarette ends, loose tobacco and ash.
During walks, watch your dog carefully around:
- bins and overflowing litter
- benches and smoking areas
- pub gardens
- outdoor seating areas
- station entrances
- car parks
- beaches and picnic areas
My guide to dog walking safety includes further advice about scavenging, discarded food and hazards encountered during everyday walks.
What if my dog has chewed a vape or swallowed e-liquid?
Contact your vet or Animal PoisonLine immediately.
Vape liquid can contain concentrated nicotine. A dog may chew a cartridge, disposable vape or refill bottle and be exposed through the mouth, digestive system or skin.
When calling for advice, have the following information available:
- the brand of liquid or vape
- the nicotine strength shown on the label
- the container’s original volume
- approximately how much is missing
- whether the container was leaking
- whether liquid is on your dog’s mouth, coat or skin
- your dog’s weight
- the time the exposure occurred
If e-liquid has leaked onto your dog’s skin, protect your own hands and follow immediate cleaning instructions from your vet or Animal PoisonLine. Animal PoisonLine advises washing residue from the skin with soap and water while avoiding personal exposure.
Do not delay the call while trying to clean a distressed or seriously unwell dog.
What about nicotine gum, patches and pouches?
Nicotine replacement products should also be treated as potential poisoning risks.
These products may contain a concentrated dose of nicotine and can be attractive to a dog because of their smell, flavour or chewy texture.
Contact your vet after suspected ingestion of:
- nicotine chewing gum
- used or unused nicotine patches
- nicotine lozenges
- nicotine pouches
- nicotine sprays
- tobacco-free nicotine products
Take the packet or photograph the ingredients.
Do not assume that a used patch or pouch is harmless. Ask a veterinary professional to assess the risk.
Who should I call?
Your first call should normally be to your veterinary practice or its out-of-hours emergency service.
You can also contact Animal PoisonLine on 01202 509000 for poisoning triage advice for pet owners.
Animal PoisonLine is operated by the Veterinary Poisons Information Service and can assess the likely risk using details about the animal and the product involved. Its official nicotine guidance directs owners to call after exposure to cigarettes, e-cigarettes or nicotine replacement products.
Do not use an online article as a substitute for speaking to a veterinary professional.
What information will the vet need?
Try to provide:
- your dog’s breed
- your dog’s approximate weight
- your dog’s age
- the product involved
- the nicotine concentration, when available
- the amount that may be missing
- the time of exposure
- any symptoms you have noticed
- any existing health conditions
- any medication your dog takes
Take the original packaging, remaining product or a clear photograph with you.
Do not delay leaving for the veterinary practice because you cannot answer every question. Give the best information you have.
What might happen at the veterinary practice?
The veterinary team will assess your dog and decide what treatment or monitoring is appropriate.
Depending on the circumstances, this could involve:
- checking heart rate, breathing and neurological responses
- monitoring for developing symptoms
- veterinary decontamination when considered safe and appropriate
- medication to manage symptoms
- fluids and other supportive care
- observation until the veterinary team is satisfied that your dog is stable
The correct treatment depends on the substance and your dog’s condition. Procedures such as inducing vomiting or giving activated charcoal should only be carried out when a veterinary professional decides they are appropriate.
What should I not do?
Do not:
- wait for your dog to become ill
- try to calculate a safe dose yourself
- induce vomiting at home
- give salt water
- give human medication
- force your dog to eat or drink
- rely on advice from an unverified social media post
- throw away the packaging
- assume a used cigarette butt contains no nicotine
- assume a nicotine-free label without checking it
Stay as calm as you can and telephone a professional.
Preventing nicotine poisoning at home
Keep all nicotine and tobacco products in a closed cupboard that your pet cannot access.
Pay particular attention to:
- handbags left on the floor
- coat pockets
- bedside tables
- coffee tables
- open bins
- ashtrays
- garden tables
- car door pockets
- vape refill bottles
- disposable vapes waiting to be discarded
Empty ashtrays promptly and store waste in a secure bin.
Ask visitors not to leave cigarettes, pouches, gum, patches or vaping products where your dog can reach them.
Reducing the risk during walks
Some dogs are quick and determined scavengers.
A secure lead and good observation can help you move your dog away from litter before they pick it up. Calmly practise cues such as “leave” and “drop”, using rewards rather than confrontation.
Do not chase your dog or force their mouth open unless there is an immediate danger and it is safe to intervene. A frightened dog may swallow an item more quickly or bite when someone grabs at their mouth.
For broader emergency preparation, visit my dog first aid guide.
Smoking around pets
This article focuses on eating nicotine products, but smoke exposure also matters.
Second-hand smoke can affect pets directly, while particles can settle on furnishings, clothing and an animal’s coat. PDSA advises that opening a window does not remove all exposure and recommends keeping smoke away from pets.
Keep pets away from smoke, ashtrays, cigarette waste and vaping products. Smoking outside and washing your hands afterwards can reduce exposure, although stopping smoking provides the greatest protection.
Frequently asked questions
Yes, it is possible. The risk depends on the product, nicotine content, amount swallowed and the dog’s size. Contact your vet rather than trying to assess the dose yourself.
Yes. Vomiting does not prove that the entire product has been removed or that no nicotine has been absorbed. Telephone your vet and explain what happened.
Signs can develop rapidly. Do not use the absence of symptoms as a reason to delay contacting your vet.
No, unless a veterinary professional specifically tells you to do so. Inducing vomiting incorrectly can cause further harm.
Yes. Used cigarette butts can retain nicotine and other residues. Keep ashtrays and discarded cigarettes away from pets
Animal PoisonLine can provide poisoning triage advice, but a dog that is unwell, collapsing, trembling, having breathing difficulties or experiencing seizures needs urgent veterinary attention.
Related dog safety guides
You may also find these guides useful:
- Dog Poisoning: What Owners Should Do
- Dog First Aid Guide for Owners
- Dog Walking Safety Tips
- First Aid Kit Essentials for Dog Walks
Final reminder
If your dog has eaten a cigarette, cigarette butt, tobacco, vape liquid or another nicotine product, contact your vet straight away.
Do not wait for symptoms, attempt a home treatment or rely on an online dosage calculation.
Fast, calm action gives your vet the best opportunity to assess the risk and provide appropriate care.
Veterinary disclaimer
I am a professional dog walker with an Ofqual Level 3 Canine First Aid qualification, but I am not a veterinary surgeon.
This article provides general educational information and is not a substitute for veterinary advice, diagnosis or treatment. Under the Veterinary Surgeons Act 1966, veterinary diagnosis and treatment must be carried out by an appropriately qualified veterinary professional.
If your dog has eaten a cigarette, tobacco, nicotine product or vape liquid, contact your vet or an emergency veterinary service immediately.
