Nicotine is an alkaloid found in the nightshade family of plants ( Solanaceae ) that constitutes approximately 0.6–3.0% of the dry weight of tobacco , with biosynthesis taking place in the roots and accumulation occurring in the leaves. It functions as an antiherbivore chemical with particular specificity to insects; therefore nicotine was widely used as an insecticide in the past, and currently nicotine analogs such as imidacloprid continue to be widely used. In low concentrations (an average cigarette yields about 1 mg of absorbed nicotine), the substance acts as a stimulant in mammals and is the main factor responsible for the dependence-forming properties of tobacco smoking . According to the American Heart Association , nicotine addiction has historically been one of the hardest addictions to break, while the pharmacological and behavioral characteristics that determine tobacco addiction are similar to those determining addiction to heroin and cocaine . Nicotine content in cigarettes has slowly increased over the years, and one study found that there was an average increase of 1.6% per year between the years of 1998 and 2005. This was found for all major market categories of cigarettes. Research in 2011 has found that nicotine inhibits chromatin-modifying enzymes (class I and II histone deacetylases) which increases the ability of cocaine to cause an addiction .
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Premium Questions (30)
what is the best way to stop using the combipatch? I stopped cold XXXXXXX two days ago and I feel awful!
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just had a blood hcg, beta, subunit, qual, serum done, the results show Positive (Abn: A) Units: miu/ml Negative <6. Im 4 1/2 weeks pregnant and very concerned this test is showing me that something is wrong....
REALLY WANT TO QUIT. PLEASE HELP. I HAVE 2 KIDS & RESPONSIBILITIES ARE HUGE. 919 DAYS LIVING WILL BE TOO TOO MUCH SHORT FOR ME. I WANT TO LIVE A TOBACCO @ ALCOHOL FREE LIFE.... PLEASE SUGGEST.
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I am a 26 year old male, 5,11 in height. and weigh 10.5 stone. I have not been to the doctor's in years but feel i would like to explain my symptoms to you guys online so as to get a more direct answer to my problem.
For the...
Can nicotine (or cotinine) be transferred to others through saliva? Would the recipient notice?
i m taking one tablet of Escitalent Plus every day for last 4 years. i have gone addicted .but i wanted to leave. how can i quit.
Quit smoking 7 days ago. Vomiting every night for past 4 days and throat hurting all the time. I smoked for about 15 years. I was never told about these symptoms during quitting and I thought the physical symptoms...
hello, my name is XXXXXXX I have a query regarding an ayurvedic product- Zero addiction, which guarantees that within 45 days a person can leave the habit of drinking, smoking or any other drugs... I have seen...
Due to my tobacco chewing habit, my mouth is not opening properly. How can I solve this problem?
Does Kinectic Parkinson, differ from just Parkinsons Dieson ?? I was just diagnosed with this in XXXXXXX 2013 ! I have had Rhuematoid RA for 37 years ! Still active with everything, they started taking me off all my...
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Online Doctor Chat (79) - Nicotine
Doctor : hi
Doctor : how can i help you
User : How are you Doctor
Doctor : Yes
User : Iam asking you How are you
Doctor : Good Thanks
Doctor : how are you XXXXX
User : Iam fine thank you
User : may i know from where ur responding?
Doctor...
User : Hello
Doctor : HI
User : How do belive that you are the doctor ?
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do yo have any other option?
User : may be you are callcenter people
User : which country you are sitting ?
User : If you suggest some worng medicines and...
Doctor : Hi
User : How to quit smoking
User : Hi Doctor
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Doctor : how old are you?
User : 29
Doctor : what work d you do? how much do you smoke?
User : I'm a software professional. I smoke half pack a day.
Doctor :...
User : Hi
Doctor : HI
User : This is
Doctor : Tell me
User : Well the main concern is wanna quit smoking
Doctor : ok
Doctor : Since when have you been Smoking and What is your age now.
Doctor : What are the number of Cigarettes that you...
User : Dear User, You have started the test chat with our doctor. The duration of the test chat is 5 minutes. After the trial period, you will be redirected to the Payment page.
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Public Forum (140) - Nicotine
I m going to be taking a hormone test that will last a month, I have to put my saliva in a tube every 3 days when I wake up for 30 days. Im a female if it makes a difference. Will smoking hookah affect the test? I know cigarettes might because of the smoke of burning tobacco, but hookah is steamed and used with water; never burned. Would using...
3 Answers
The No Smoking signs in public places may soon become redundant. Tobacco companies in Britain are all set to launch mint candies containing nicotine in the market . Each candy will contain 1 mg of nicotine, the same as in one cigarette. The nicotine candy called cigarette, made mostly of crushed tobacco, would be sold in packets with the cost of...
1 Answer
Hello, i played rugby the day before and got hit in the chest really bad, the next day when i smoke my first cigarette, i felt pain exactly where it constarains when i smoke(inhale) the cigarette, it pains only when i tighthen my throat, when i swallow and touch my throat in every direction, no pain, just when i lift my head, or do a pressure.
3 Answers
hello, my mum smokes 15 cigarettes a day, and i m normally in the same room. will it damage my health, or shorten my lir=fe? I m 13
1 Answer
About two days ago I split my first cough in morning with blood . What i do now? Im a smoker and smock about 5 cigarettes in a day.
1 Answer
I have been using the Nicotene patch now for almost 7 sevens weeks and have been experiencing vaginal irritation pretty much the whole time, could the patch be the culprit?
1 Answer
Hello! I m 16 years old and i suffer from hard various pains in my heart and chest . I smoked before but about 20 cigarettes at my whole life, ain t smoking now nor drinking any alcohol . I feel serious pressure and as if someone poking my heart with a needle, as well as sometimes the beat goes really fast not as normal, what could it mean? 95kg...
1 Answer
First of all, I m only 13 years old. Last night I smoked a cigarette for the first time. I feel so guilty and some of my friends are disappointed but I feel fine. I actually want another one. What should I do? And how can I get cigs without my parents knowing?
Doctor...I work out daily, 48 yr old male, 195 lbs, 6 2 . Never have used any substances EXCEPT beer and now Nicotine Gum as I used to use Smokeless tabacco. Suddenly within the last year I experience night sweats all night and if I use Nicotine Gum in the am, it causes gagging and almost near vomiting . I am not sure if this is a result of the...
2 Answers
Hi, I am currently affected with tuberculosis and is under medication for the last 2 months. I used to smoke previously but due to this disease , I had to quit. I have withdrawal symptoms and is getting into huge depression due to nicotine withdrawal . I cannot lead my normal life as I used to since I cannot smoke. Please tell me can I smoke...
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