Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Smoking Cessation Health Center

Font Size

Understanding Nicotine Withdrawal -- the Basics

What Is Nicotine Withdrawal?

Withdrawal from nicotine, an addictive drug found in tobacco, is characterized by symptoms that include headaches, anxiety, nausea, and cravings for more tobacco. Nicotine creates a chemical dependency so that the body develops a need for a certain level of nicotine at all times. Unless that level is maintained -- by smoking or chewing tobacco -- your body will begin to go through withdrawal.

For tobacco users trying to quit, symptoms of withdrawal from nicotine are unpleasant and stressful -- but they are temporary. Most withdrawal symptoms peak 48 hours after you quit and subside over the next 3 to 4 weeks. But after that, you may still have to deal with the fact that many people trying to quit smoking find themselves eating more and gaining weight in the process.

What Causes Nicotine Withdrawal?

The symptoms of nicotine withdrawal are physiological responses to the removal of a substance the body has become dependent on: nicotine.

WebMD Medical Reference

Reviewed by Lisa B. Bernstein, MD on March 18, 2015

Today on WebMD

hands breaking a cigarette
Is quitting cold turkey an effective method?
14 tips to get you through the first hard days.
smoking man
Surprising impacts of tobacco on the body.
cigarette smoke
What happens when you kick the habit?

Filtered cigarettes
an array of e cigarettes
human heart
Woman experiencing withdrawal symptoms

man smoking cigarette
no smoking sign
Woman ashing cigarette in ashtray
chain watch