How Long Does Nicotine Stay In The Blood?

Nicotine stays in the blood for several hours, up to 48 hours to be precise. After this it cannot be detected in the blood or urine. However, the metabolite of nicotine which is known as Cotinine leaves its traces in blood as well as in urine for up to 7 days. About 85 to 90 per cent of the nicotine which is present in your blood is metabolised by the liver and is thrown out of your system by the kidney. But due to the higher concentration, many a times, it still persists in the blood stream. Nicotine is a very highly addictive chemical that is the main component of cigarettes. Your body, especially your heart and lungs, will usually begin to heal at 12 hours after you've had your last cigarette/ stopped smoking.

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An alkaloid found in the night shade plant family is known as nicotine. Nicotine spends around 2-3 hours in a human body. As the substance enters the body it quickly runs and distributes itself in the blood stream and blood-brain barrier. It takes around 7-8 seconds for nicotine reach the blood brain barrier. Nicotine is used in tobaccos; the intake of nicotine in the body by smoking depends on the quality of tobacco.

Nearly half a million people in the United Kingdom die by the use of tobacco. Intake of nicotine can harm every functional organ in the body. Nicotine is an addictive drug, once started it is very hard to get rid of the habit. Excessive use of tobacco can also result in cancer and ultimately to death.

The name nicotine is taken from 'Nicotiana tabacum'; it is a plant that produces Nicotine.

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