Thanks for providing more information.
Nicotine or cotinine(metabolite of nicotine)will remain in the body for 3-4 days after last dose of smoking.
Since nicotine is a water soluble drug,drinking a lot of water and fruit juices will help in faster elimination from the body.
Nicotine withdrawal starts after 48 hours of cessation of smoking due to the levels of nicotine falling in the body due to its excretion.
Physical addiction of nicotine lasts for few days to few weeks after complete cessation of smoking.
Chantix should be taken for 12 weeks after quitting smoking to prevent any withdrawal effects and desire to smoke again.
Once you start taking Chantix, choose a quit date that is between 8 and 35 days after you start treatment.
Having said this,as you have history of high blood pressure,anxiety issues so it is advised to discuss about your smoking cessation with your doctor.
You may also require some behavioural support and counselling.
After 2-3 months of smoking cessation,your blood circulation and lungs function improves.
After 9 months,cilia restart normal function of your lungs and increase the ability to handle mucus,clean lungs and reduce the risk of infection.
I hope this helps.
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