Tobacco used to make cigarettes is a tall, greenery annual plant, mostly grown in South and Central America, but now planted all over the world, including southern Ontario. There are several types of tobacco; Nicotiana tabacum (or common tobacco) is used to make cigarettes.
Nicotine, a potent central nervous system stimulant found naturally in the tobacco leaf, is listed as a drug. Nicotine is one of the most essential ingredients in tobacco. Nicotine is highly toxic at higher doses. People use it majorly as insecticide
Tobacco leaves may be burned and inhaled (in the form of cigarettes, cigars, pipes, smoke, etc.) or ingested through the mouth (in the form of spit tobacco, chew, or snuffed.
Smokers generally feel dizzy and sick when they first inhale nicotine in tobacco, but start increasing their immunity to its effects. Other signs encountered by new smokers include coughing, dry, sore throat as well as nausea, fatigue, stomach cramping, headache, coughing or gagging. These symptoms go down as the patient builds a tolerance to nicotine.
Nicotine is very addictive. The addictive influence of nicotine is the primary explanation for the widespread use of tobacco. Many smokers prefer to smoke to prevent the discomfort of withdrawal symptoms. Smokers often change their actions (inhaling more deeply, for example) to maintain a certain amount of nicotine in the body.
Smokers who normally smoke at least 15 cigarettes a day and/or smoke their first Cigarette of the day within 30 minutes of waking up are likely to experience symptoms of nicotine withdrawal. They're likely to find it leaving unpleasant.
Stopping can cause unpleasant withdrawal symptoms, including depression, insomnia, irritability, trouble concentrating, restlessness, anxiety, decreased heart rate, increased appetite, weight gain, and nicotine cravings.
There are Symptoms peak that last up to 24 to 48 hours after stopping and can even for weeks while the hunger for a Cigarette may last for months.