Nicotine

Nicotine is a stimulant and psychoactive substance found in tobacco products. It is highly addictive and can have various effects on the body.

What is Nicotine?

Nicotine is a naturally occurring chemical compound found in the leaves of the tobacco plant. It is also available in various forms, including cigarettes, chewing tobacco, snuff, and electronic cigarettes (e-cigarettes).

How Does Nicotine Work?

Nicotine works by stimulating the brain's reward system, releasing feel-good chemicals such as dopamine. This can lead to physical dependence and addiction.

Effects of Nicotine

Nicotine Replacement Therapy (NRT)

NRT is a medical treatment used to help people quit smoking. It involves the use of nicotine in controlled amounts to reduce withdrawal symptoms and cravings. NRT products include gum, lozenges, patches, inhalers, and nasal sprays.

Risks and Precautions

  • Pregnancy and breastfeeding: nicotine can harm the developing fetus and baby.
  • Children and adolescents: nicotine can have negative effects on brain development and increase the risk of addiction.
  • Cardiovascular disease: nicotine can increase heart rate and blood pressure, which may worsen existing cardiovascular conditions.

Overdose and Poisoning

Nicotine overdose or poisoning can occur if too much nicotine is ingested. Symptoms include nausea, vomiting, headaches, dizziness, and in severe cases, seizures, coma, and even death.

Treatment for Nicotine Addiction

Treatment for nicotine addiction typically involves a combination of counseling, support groups, and medication, such as NRT or prescription medications like bupropion (Zyban) or varenicline (Chantix).

Frequently Asked Questions (FAQs)

What is nicotine?
A stimulant found in tobacco products.

How is nicotine used?
To help quit smoking or as a recreational substance.

What are the effects of nicotine?
Increased heart rate and alertness.

Is nicotine addictive?
Yes, it is highly addictive.

Can nicotine be harmful?
Yes, especially to the cardiovascular system.

How does nicotine affect pregnancy?
It can increase risk of premature birth.

Can nicotine cause withdrawal symptoms?
Yes, when trying to quit.

Is nicotine approved by health organizations?
For smoking cessation, yes, in certain forms.

What are common forms of nicotine?
Gum, patches, lozenges, and inhalers.

Can nicotine interact with other medications?
Yes, consult a doctor before use.

Article last updated on: 25th June 2025.
If you have any feedback, please get in touch.

See more

 Conditions  Symptoms  Procedures

Diagnosis Pad
Medical AI Assistant with Differentials, Guidance, Transcriptions, Notes, Medical Encyclopedia and Explainable AI.


Available for iOS, macOS and Android.

Medical Disclaimer

The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this site. We we do not guarantee, and assume no legal liability or responsibility for the accuracy, currency, or completeness of the information provided.