Nicotine withdrawal can feel messy: irritability, cravings, sleep changes, headache, restlessness, low mood, and trouble concentrating are all commonly reported. Most symptoms are strongest early and often ease with time, but severe or unusual symptoms deserve medical help.
This content is informational and does not replace medical advice. If symptoms feel severe or unusual, seek medical help.
Common symptoms and what may help
Withdrawal is your body and brain adjusting to less nicotine. Cravings are the obvious symptom, but many people also notice irritability, low mood, restlessness, trouble sleeping, headache, coughing, constipation, appetite changes, or foggy concentration. A 2007 review of withdrawal research found that symptoms such as anger, anxiety, low mood, poor concentration, insomnia, and restlessness tend to peak within the first week and last about 2 to 4 weeks. The quit-smoking timeline gives more context for the early days.
Match the response to the symptom:
- For cravings: delay, change rooms, drink water, use gum or a toothpick.
- For irritability: warn people close to you that your fuse is shorter this week.
- For sleep: keep caffeine earlier in the day and put your phone away before bed.
- For appetite: prepare easy snacks before the craving hits.
- For foggy focus: do smaller tasks and take short breaks.
When to get medical help
Get help quickly for chest pain, severe shortness of breath, fainting, blood when coughing, severe depression, panic that does not settle, or thoughts of self-harm. Quitting can be uncomfortable; it should not put you in danger.
For symptom-specific detail, see headaches and sleep problems. Constipation can also happen after quitting, so consider discussing persistent or severe symptoms with a healthcare professional.
If cravings are the hardest part today, use the nicotine cravings guide to make a plan for the next one.
Sources
- Smokefree.gov: https://smokefree.gov/challenges-when-quitting/cravings-triggers/how-manage-cravings
- Smokefree.gov nicotine withdrawal: https://smokefree.gov/challenges-when-quitting/withdrawal/managing-nicotine-withdrawal
- CDC quitting tips: https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/index.html
- CDC withdrawal symptoms: https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/7-common-withdrawal-symptoms/index.html
- Hughes JR, “Effects of abstinence from tobacco: valid symptoms and time course,” Nicotine & Tobacco Research (2007): https://pubmed.ncbi.nlm.nih.gov/17365764/ (review finding that anger, anxiety, low mood, poor concentration, insomnia, and restlessness peak within the first week and last 2 to 4 weeks)
- Hajek P, Gillison F, McRobbie H, “Stopping smoking can cause constipation,” Addiction (2003): https://pubmed.ncbi.nlm.nih.gov/14616182/ (constipation increased after quitting in a large group of smokers’ clinic patients)
Frequently asked questions
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How long do nicotine withdrawal symptoms last?
- There is no exact day for everyone. Many symptoms are strongest in the first days or weeks and then ease, but triggers can bring cravings back later.
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Which symptoms are a red flag?
- Chest pain, severe breathing problems, fainting, blood when coughing, or thoughts of self-harm need urgent medical support.
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Should I track symptoms?
- Yes. Track the symptom, time, trigger, and what helped. Patterns are easier to address than a vague sense of feeling awful.