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  • Nicotine pharmacokinetics  (1)
  • Smoke-free cigarettes  (1)
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  • 1
    ISSN: 1432-2072
    Keywords: Smoking ; Cigarette withdrawal ; Smoke-free cigarettes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a double-blind randomised trial, 40 cigarette smokers used either nicotine-containing or placebo smoke-free cigarettes during 24 h abstinence from smoking. Subjects in the nicotine group experienced smaller increases in irritability and difficulty concentrating and fewer urges to smoke than those who received placebo. Nicotine smoke-free cigarettes were rated as more satisfying, more helpful and more effective in relieving craving than placebo. After 24 h use nicotine smoke-free cigarettes provided average blood nicotine levels of 6.3 ng/ml, i.e., 29.2% of smoking levels. The most frequent side effects were irritation of the throat and coughing. Overall, side effects were rated as not serious. Although the smoke-free cigarette in its present form is not very efficient in delivering nicotine, it was effective in alleviating initial tobacco withdrawal. It is possible that by providing both nicotine and “behavioural” replacement it may be particularly useful in the first stages of stopping smoking. The product is worth further investigation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 102 (1990), S. 56-58 
    ISSN: 1432-2072
    Keywords: Cigarette smoking ; Nicotine tolerance ; Nicotine pharmacokinetics ; Subcutaneous dosage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Plasma nicotine concentrations following subcutaneous (SC) injection were measured in six subjects who included three life-long nonsmokers. On average, a peak plasma level of 8.5 ng/ml (SD=3.1) was reached 15 min after the mean dose of 13.25 µg/kg nicotine base. Subjective effects were reported by five subjects. The peak heart rate response (mean boost 11 beats per min at 10 min) preceded and was already declining by the time plasma nicotine concentrations peaked. Hysteresis plots showed clear evidence of acute nicotine tolerance in subjects who had never smoked, indicating that acute tolerance is not an acquired phenomenon. The acquisition by smokers of chronic tolerance to nicotine has not yet been systematically demonstrated. Reliable dose-response studies in smokers and nonsmokers are needed, and use of the SC route for this purpose is discussed.
    Type of Medium: Electronic Resource
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