Can Nicotine Make You Sick

Yes, nicotine can make you feel sick if you take in too much. Common symptoms can include nausea, dizziness, headache, sweating, and a faster heart rate. Symptoms may improve after nicotine use stops, but severe or worsening symptoms require prompt medical guidance. More serious symptoms can be signs of nicotine poisoning and may require urgent medical attention. 

Key Takeaways
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  • Feeling sick after using nicotine may indicate excessive nicotine exposure.
  • Common symptoms include nausea, dizziness, headache, sweating, and a faster heart rate.
  • Severe symptoms such as repeated vomiting, confusion, weakness, trouble breathing, or seizures require immediate medical attention.
  • If a child swallows a nicotine product, call Poison Control (1-800-222-1222) immediately—a dose that's mild for an adult can be dangerous for a small child. 

What Happens If You Have Too Much Nicotine? 

How someone feels after using nicotine depends on several factors such as:

 

  • how much nicotine is absorbed 
  • how quickly it is absorbed
  • individual tolerance
  • differences in nicotine metabolism

 

Using more nicotine than you are used to can lead to unpleasant effects. For example, someone who previously smoked or vaped but has not used an oral product may experience the symptoms described above. The severity and duration of symptoms can vary based on the amount absorbed and may differ from person to person. 

Common Symptoms of Too Much Nicotine 

Some common reactions to using too much nicotine include hiccups, heartburn, and nausea.


Other symptoms may include:

 

  • increased saliva
  • dizziness
  • headache
  • sweating
  • increased or irregular heart rate

 

These symptoms can occur when:

 

  • using nicotine on an empty stomach
  • trying a stronger nicotine strength than usual
  • using multiple nicotine products in a short period
  • accidentally swallowing or otherwise being exposed to nicotine

 

Nausea or other symptoms may indicate that your body has received more nicotine than it can comfortably handle at that moment. Mild symptoms caused by overuse often improve after nicotine use stops. This differs from cases where a product has been swallowed, which should be treated as described below. 

What is Nicotine Poisoning?

Nicotine poisoning occurs when the amount of nicotine in the body reaches a toxic level.


Children are especially vulnerable because of their smaller body size, which is why nicotine products should always be stored out of their reach. 


Symptoms of nicotine poisoning may include:

 

  • vomiting
  • confusion
  • weakness
  • difficulty breathing
  • seizures (in severe cases) 

 

Other possible signs include agitation, excessive saliva, abnormal heart rate or blood pressure, lethargy, and changes in breathing.


If these symptoms occur — or if you know or suspect that a product has been swallowed — contact Poison Control (1-800-222-1222 in the U.S.) or seek emergency care immediately. 

Nicotine Poisoning vs. Mild Discomfort 

Symptoms of excessive nicotine exposure can vary in severity and may overlap: 

Symptoms That May Be Less Severe Symptoms Requiring Urgent Evaluation
Nausea or light-headedness Repeated Vomiting
Temporary dizziness Confusion or disorientation
Mild headache or sweating Difficulty breathing
Increased saliva Seizures or loss of consciousness

For adults using these products as intended, mild symptoms often improve after nicotine use stops. The more serious symptoms tend to persist or get worse rather than ease off, and these warrant urgent evaluation.


Symptoms can overlap and change in severity, so if you’re unsure, treat the situation as more serious. Contact Poison Control at 1-800-222-1222 if a product is swallowed or poisoning symptoms appear, especially for a child. Seek emergency care for severe symptoms. 

How to Avoid Too Much Nicotine

To reduce the likelihood of unpleasant effects:

 

  • follow the instructions on the product packaging
  • avoid using multiple products close together
  • do not use more than directed
  • keep all nicotine products away from pets and children  

 

If you feel unwell from using a product, stop using nicotine and consider seeking guidance from Poison Control. Do not wait for symptoms to worsen before asking for help, especially if a child is involved. If a child has swallowed a nicotine product, contact Poison Control immediately rather than waiting for symptoms. If a pet may have swallowed one, contact a veterinarian or animal poison control service immediately.  

When to Get Medical Help

You should seek medical attention if symptoms:

 

  • are severe
  • do not improve
  • include confusion, difficulty breathing, or seizures 

 

In these cases, it is important to treat the situation as a potential medical emergency. Call Poison Control at 1-800-222-1222 or call 911. 

Important: 

The products sold on this site contain nicotine. Nicotine is an addictive chemical that may increase heart rate and blood pressure and pose risks for individuals with certain medical conditions, particularly cardiovascular disease. These products are intended only for adult (21+) current nicotine users and are not for non-users. Sales to persons under 21 are prohibited. 

FAQs

  • Yes. Nausea is one of the most common signs that a person may have absorbed too much nicotine.
  • Mild symptoms like nausea or dizziness usually ease once you stop using the product. Nicotine poisoning is more serious —warning signs include persistent vomiting, confusion, trouble breathing, or seizures. If these appear, seek medical attention right away or contact Poison Control at 1-800-222-1222. 
  • Stop using nicotine. Mild symptoms often improve once nicotine use stops. If symptoms persist or worsen, contact Poison Control. If symptoms are severe or include breathing problems, confusion, or seizures, seek medical help right away.