How Long Does Nicotine Stay In Your System?

When people use tobacco products, some of the Nicotine Stays in Your System after they quit smoking. Medical tests can detect nicotine in people’s urine, blood, saliva, hair, and nails.

Nicotine is the addictive substance in tobacco, cigarettes, and vapes or e-cigarettes.  When someone smokes a cigarette, their body absorbs up to 90 percent of the nicotine. Traces of nicotine will linger long after individuals no longer feel the effects.

How long does nicotine stay in your system?

  • Urine: Up to four days
  • Blood: Up to four days
  • Saliva: Up to four days
  • Hair: Up to ninety days

Nicotine has a half-life of about two hours. The length of time that a drug remains in your body depends on the drug’s half-life, which is the amount of time it takes for 50 percent of the substance to leave your system. Mayo Medical Laboratories states that cotinine has a half-life of about 15 hours, while nicotine has a half-life of about two hours. The half-life is the amount of time it takes for half of a dose to eliminated from the body.

How long does nicotine stay in Your Urine?

According to the University of Rochester Medical Center, cotinine levels in urine begin to return to average about 7 to 10 days after you last smoked. Regular smokers may have detectable levels for as long as 15 to 20 days. Urine tests are done at home or in a lab, with results returned 24 hours to five days.

Testing urine samples for cotinine is the most widely used detection method—four to six times more cotinine found in urine than in blood or saliva.

How long does nicotine stay in Your Saliva?

Saliva tests detect the presence of nicotine for about one day. Cotinine can be seen for up to seven days after the last use or up to two weeks in heavy smokers. Cotinine can be traced in saliva for up to four days after last use. Dry mouth or excessive salivation are two issues that can sometimes pose problems with collecting a sample.

How long does nicotine stay in Your Blood?

Nicotine can appear in the bloodstream about an hour after inhalation. Nicotine may be present in the blood for only 48 hours, while cotinine may be detectable for up to three weeks. After blood drawn in a lab, results can take from two to 10 days.

How long does nicotine stay in Your Hair?

Various drugs, including nicotine, can be found in your hair for up to 90 days after ingestion. Some tests can identify nicotine in your hair for up to a year after the last exposure. As with other substances, hair follicle testing can detect nicotine’s presence for a much more extended period. Testing for nicotine in hair is not as standard as testing urine, saliva, or blood. Hair examinations generally cost more. But hair tests have longer drug detection windows than tests of urine, blood, or saliva.

Effects of Nicotine:-

The physical and psychological effects of nicotine withdrawal include:     

  • Anxiety or stress    
  • Irritability    
  • Depression
  • Increased appetite
  • Restlessness
  • Trouble sleeping
  • Difficulty focusing  

Factors that influence how long nicotine stays in your body:-

People break down nicotine at different rates. The time it takes to clear the chemical and its metabolites from the body depend on many factors, including age, sex, diet, type of tobacco product used, and nicotine use history.

If you use tobacco daily in the high range, it will last longer and affect more in your system and cause severe effects on your lungs.

How to get nicotine out of your system?

The first step in getting nicotine out of your system is to stop using all products that contain it completely. Once you have stopped using nicotine, there are some steps you can take that may speed up how quickly the drug is excreted from your system.

  • Stay hydrated: Drinking plenty of water will help remove nicotine and its metabolites from your body through urine.    
  • Eat nutritious foods: Sticking to a healthful diet that includes plenty of antioxidant-containing foods may speed up how quickly nicotine is removed from your system.   
  • Exercise: Regular physical activity can increase your metabolism and the rate at which the drug is processed and cleared from your body.


Nicotine is a drug, and every prescription is harmful to human beings. It usually enters your system by smoking. It affects many physical and psychological issues.  Firstly, you have to stop smoking. Secondly, test to check how much you have in your system. Lastly, be careful again and take healthy food and be hydrated enough.

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