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Man holding head as a headache, indicating nicotine poisoning effects

Key Takeaways

  • Too much nicotine can overstimulate the nervous system. 
  • Nicotine poisoning is rare but can happen when products are accidentally ingested. 
  • Children are more vulnerable than adults to nicotine poisoning. 
  • Symptoms tend to occur in two stages. 
  • Mild cases normally last around 1-2 hours.

What is Nicotine?

Nicotine is a naturally occurring chemical that is produced by the tobacco plant as an insecticide. 

While traditionally found in cigarettes and chewing tobacco, nicotine is now present in a wide range of products, including:  

  • Nicotine pouches  
  • E-cigarettes and vapes  
  • Nicotine gum and patches  
  • Pure liquid nicotine

What is Nicotine Poisoning?

Nicotine poisoning, also known as nicotine toxicity, occurs when you absorb more nicotine than the body can safely process.  

This leads to a rapid build-up of nicotine in the bloodstream, which can overstimulate the nervous system and cause a range of symptoms.  

However, there is a difference between having a bad reaction to nicotine, and actual nicotine poisoning.  

If you're wondering, "can you get nicotine poisoning?" then the answer is yes—but true nicotine poisoning is rare. 

Having a Bad Reaction to Nicotine

A bad reaction is a temporary and non-toxic response to nicotine. It’s usually caused by:  

  • Individual sensitivity
  • Using too much nicotine too quickly
  • Swallowing saliva mixed with nicotine
  • Dehydration or empty stomach

Common symptoms of a bad reaction to nicotine include: 

  • Mild nausea or dizziness 
  • Throat irritation 
  • Headache or rapid heartbeat

These symptoms typically pass within minutes and are not dangerous unless they persist or get worse.  You can read more about these and other symptoms in our snus side effects article.

Nicotine Poisoning (Toxicity)

Nicotine poisoning happens when the body absorbs too much nicotine, which overwhelms the nervous system. 

Nicotine poisoning is caused by: 

  • Swallowing nicotine products (especially liquid or pouches)
  • Accidental ingestion by children

The signs of nicotine poisoning include 

  • Vomiting, confusion, and diarrhoea
  • Shallow breathing, slowed heart rate
  • Seizures, coma, or cardiac arrest (in severe cases)

If you’re wondering how to know if you have nicotine poisoning, the symptoms and their severity are important indicators. 

Understanding what does nicotine poisoning look like in practice can be easier when symptoms are divided into the two stages in which they typically occur.

The Two Stages of Nicotine Poisoning

The symptoms of nicotine poisoning tend to appear in two stages.

The first stage normally occurs within the first 15 minutes to 1 hour after ingesting nicotine. The second stage typically takes place 30 minutes to 4 hours after ingestion.

First Stage Symptoms of Nicotine Poisoning 

Second Stage Symptoms of Nicotine Poisoning 

  • Nausea
  • Vomiting (seen in over 50% of cases)
  • Excessive salivation
  • Abdominal pain
  • Pale skin
  • Sweating
  • Increased heart rate and blood pressure
  • Rapid breathing
  • Tremors and muscle twitching
  • Headache and dizziness
  • Loss of coordination or balance
  • Seizures
  • Diarrhoea
  • Low blood pressure and slow heart rate
  • Irregular heart rhythms
  • Shock or coma
  • Muscle weakness or paralysis
  • Shallow breathing or respiratory failure
A woman holding down lying her stomach; one of the symptoms of nicotine poisoning

Small Doses vs Large Doses of Nicotine

Low doses of nicotine tend to have a stimulatory effect on the central nervous system.   

In contrast, large doses have a depressing effect (meaning, they slow down the activity of the brain and central nervous system).  

Wondering how to treat nicotine poisoning? Nicotine poisoning treatment depends on the severity of the symptoms and should be guided by a medical professional. Do not rely on home remedies.

If you experience any symptoms beyond mild discomfort, especially vomiting, confusion, or breathing issues, stop using the nicotine product and seek medical help immediately (call 999 if you are in the UK).

Overview: The Difference Between a Bad Reaction and Nicotine Poisoning

 

Feature 

Bad Reaction 

Nicotine Poisoning 

Cause 

Sensitivity

Consuming nicotine too quickly or on an empty stomach

Swallowing saliva mixed with nicotine 

Excessive nicotine intake  

Severity 

Mild and temporary  

Potentially life-threatening  

Treatment 

Stop using product, hydrate  

Call 111 in the UK for medical advice 

Call 999 in the UK for emergency medical care  

Risk Level 

Low  

High  

How Long Does Nicotine Poisoning Last?

Mild nicotine poisoning symptoms usually resolve within 1-2 hours.2

In severe cases, symptoms can persist for up to 18-24 hours and may require medical attention.

How Much Nicotine is Too Much?

Many users want to know how much nicotine leads to a bad reaction and nicotine poisoning.  

When it comes to having a bad reaction to nicotine, this is more dependent on your individual tolerance. People react to and experience nicotine differently—see the box Why Nicotine Affects People Differently for more information. 

If you experience any of the symptoms associated with a bad reaction, you should stop consuming nicotine immediately and drink lots of water. 

As for nicotine poisoning, you must consume a very large amount of nicotine for this to happen. 

It is very rare for adults to consume enough nicotine to experience nicotine poisoning. 

The table below indicates the lower limit of a lethal dose for a young child and an adult, according to different nicotine products.

 

Product 

Amount of Nicotine in Product 

Lower Limit Lethal Dose for a Young Child (10 kg) 

Lower Limit Lethal Dose for an Adult (70 kg) 

Cigarette 

10-15 mg  

Swallowing more than four 15-mg cigarettes  

Swallowing more than thirty 15-mg cigarettes  

Vape liquid 

~40 mg in a pod  

Swallowing liquid from two vape pods  

Swallowing liquid from more than eleven vape pods  

Pouches 

1.5-20 mg per pouch  

Swallowing more than seven 10-mg pouches  

Swallowing more than forty-five 10-mg pouches 

If you’re wondering can you get nicotine poisoning from ZYN pouches, poisoning could potentially occur if a large amount were ingested.

Why Nicotine Affects People Differently

Among other factors, your individual tolerance to nicotine can affect how you experience nicotine—such as whether you experience a nicotine buzz. 

This is because how your body processes nicotine depends on genetics and liver enzymes. 

People who metabolise nicotine quickly may crave it more often. In contrast, slow metabolisers retain nicotine longer, which increases the risk of side effects. 

Other factors that influence nicotine metabolism include age, sex, and medications. 

Learn more about how long nicotine stays in your body and the factors affecting its duration.

How Can I Avoid Consuming Too Much Nicotine?

The following tips can help you avoid consuming too much nicotine and therefore avoid unwelcome side effects: 

  • Always use the product according to the instructions provided.
  • Avoid using several nicotine products within a short period.
  • Stay within the recommended amount or usage guidance.
  • Store nicotine products safely out of reach of children and pets. 

Final Thoughts

Nicotine poisoning can occur when you ingest too much nicotine, but it is rare.

Having a bad reaction to nicotine is more common. You may experience symptoms like nausea or dizziness in this case, especially if you use too many products at once or use a product that is too strong for you.

FAQs Nicotine Poisoning

Can you die from nicotine poisoning?

Yes, it is possible that you can die from nicotine poisoning. However, this is not common, according to Cleveland Clinic.

Why do nicotine pouches make me feel sick?

Nicotine pouches can make you feel sick if you are sensitive to nicotine or use a high-strength pouch.

This may lead to symptoms like nausea, dizziness, or headaches. 

Can you overdose on nicotine?

Yes, you can overdose on nicotine if you use too many nicotine products at once or ingest liquid nicotine. 

Nicotine overdose is the same as nicotine poisoning.

What are the symptoms of nicotine poisoning?

Nicotine poisoning symptoms include nausea, vomiting, dizziness, tremors, rapid heartbeat, and, in severe cases, respiratory issues and coma.

What are four signs of nicotine poisoning?

Four possible signs are vomiting, confusion, changes in heart rate and breathing difficulties. Symptoms can vary depending on the severity of the poisoning.

Can nicotine poisoning go away?

If you’re wondering can nicotine poisoning go away, mild symptoms may resolve within a few hours, while severe poisoning can require urgent medical treatment.

What to do if you have nicotine poisoning?

Stop using the nicotine product and seek medical advice. If there are severe symptoms such as breathing difficulties, seizures or loss of consciousness, call 999 in the UK.

Author - Ruby
Ruby Forbes

Content Writer

Ruby has over 5 years of experience producing content on regulated and scientific topics, helping consumers to understand the science behind nicotine and nicotine products.