You can't. It is in your hair, and fat cells. It colors your teeth yellow and you smell of it through your skin pores. Your veins constrict and your heart works harder. It even affects your taste buds. Quit smoking is the only way and that takes time for your body to heal.
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Cold Turkey. Do not smoke, use patches, chew gum, pills or any supplements that contain nicotine. After 72 hours the remains of nicotine will have past through your blood stream and your urine. During this time you may feel dizzy, unaware and cranky.
Throw away all smoking paraphernalia such as lighters and ash trays. You will want to eat more which is not necessarily a bad thing. Try tooth picks, gum, anything but a cigarette. Most people say set a date 2 weeks from now. Don't do that. The time is now, just do it.
There is actually very little that can be done safely to remove nicotine for the blood. Water will help, but too much water can be dangerous.