XML Feed for RxPG News   Add RxPG News Headlines to My Yahoo!   Javascript Syndication for RxPG News

Research Health World General
 
  Home
 
 Latest Research
 Cancer
 Psychiatry
 Genetics
 Surgery
 Aging
 Ophthalmology
 Gynaecology
 Neurosciences
 Pharmacology
  Anti-Inflammatory
  Antivirals
  Antihypertensives
  Anticholesterol
  Anti-Clotting Drugs
  Anti Cancer Drugs
  Hypnotics
  PPI
  Antibiotics
  Analgesics
  Surfactants
  Fatty Acids
  Adrenergics
  Metals
  Varenicline
 Cardiology
 Obstetrics
 Infectious Diseases
 Respiratory Medicine
 Pathology
 Endocrinology
 Immunology
 Nephrology
 Gastroenterology
 Biotechnology
 Radiology
 Dermatology
 Microbiology
 Haematology
 Dental
 ENT
 Environment
 Embryology
 Orthopedics
 Metabolism
 Anaethesia
 Paediatrics
 Public Health
 Urology
 Musculoskeletal
 Clinical Trials
 Physiology
 Biochemistry
 Cytology
 Traumatology
 Rheumatology
 
 Medical News
 Health
 Opinion
 Healthcare
 Professionals
 Launch
 Awards & Prizes
 
 Careers
 Medical
 Nursing
 Dental
 
 Special Topics
 Euthanasia
 Ethics
 Evolution
 Odd Medical News
 Feature
 
 World News
 Tsunami
 Epidemics
 Climate
 Business
Search

Last Updated: Aug 19th, 2006 - 22:18:38

Varenicline Channel
subscribe to Varenicline newsletter

Latest Research : Pharmacology : Varenicline

   DISCUSS   |   EMAIL   |   PRINT
Varenicline could increase number who quit smoking
May 7, 2006, 19:53, Reviewed by: Dr. Priya Saxena

"What makes varenicline different to existing medication is that it is the first treatment specifically designed to target the neurobiological mechanism of nicotine dependence."

 
Smokers who try to quit using existing medications, such as nicotine patches or Zyban, are about twice as likely to succeed as those who don't use medication or are prescribed placebos during clinical trials.

But despite the relative effectiveness of medications currently on the market, more than 80 per cent of quitters will be smoking again within a year, according to a review in the latest IJCP, the UK-based International Journal of Clinical Practice.

A new kind of drug has now been developed that could improve long-term quit rates, according to Dr Jonathan Foulds from the Tobacco Dependence Program at the University of Medicine and Dentistry of New Jersey.

Varenicline is being evaluated by the US Food and Drug Administration under a six-month priority review which began in late 2005.

"Trials carried out so far have yielded promising results, suggesting that varenicline could be a major advance in the treatment of nicotine dependence" says Dr Foulds.

"Drugs are normally earmarked for priority review by the FDA if they are felt to address health needs that are not currently being adequately met.

"What makes varenicline different to existing medication is that it is the first treatment specifically designed to target the neurobiological mechanism of nicotine dependence."

Initial results show that the drug successfully stimulates dopamine sometimes called the brain's pleasure chemical as well as blocking nicotine receptors. This reduces nicotine withdrawal symptoms and craving and may also prevent a lapse from turning into a full relapse.

Existing quit smoking methods have limited success and studies have found that some 18 per cent of people using them will be smoke free after a year, compared with 10 per cent of people prescribed placebos.

This figure can be increased to 25 to 35 per cent when smokers receive intensive counselling and combined medications are used.

Dr Foulds summarised 141 studies covering just over 48,000 subjects who were randomly allocated different types of medication or placebos.

He found that quit rates with nicotine replacement methods and drugs such as bupropion (trade name Zyban), nortriptyline and clonidine ranged from 14.6 per cent to 24.9 per cent. Smokers who were prescribed placebos (dummy drugs) achieved success rate of between 8.6 per cent and 14.4 per cent.

But clinical trials carried out with varenicline on thousands of smokers suggest that the new drug yield may yield better success rates.

The results of human trials reported in 2005 and 2006 found that short and long-term quit rates were higher when compared with placebos or bupropion (Zyban).

Studies presented at recent scientific meetings have shown that short-term quit rates in the first 12 weeks were approximately four times higher with varenicline than placebos and that long-term abstinence rates, for the first year, were more than twice those of placebos.

"Almost 20 countries and numerous US states have already announced or implemented comprehensive indoor smoking bans and that figure is rising all the time" adds Dr Foulds.

"Here in New Jersey, for example, smoking is very expensive and we have just implemented comprehensive legislation to ban smoking indoors in virtually all pubic places.

"This is good news for smokers and non smokers alike as many smokers are keen to quit and this gives them an added incentive.

"Medicines like varenicline are very important as they will help many more people to quit smoking, including those who have failed with other methods."
 

- The neurobiological basis for partial agonist treatment of nicotine dependence: varenicline. J Foulds, Tobacco Dependence Program, UMDNJ School of Public Health, New Brunswick, NJ, USA. IJCP, the International Journal of Clinical Practice. Volume 60.5, pages 571-576 (May 2006).
 

www.ijcp.org

 
Subscribe to Varenicline Newsletter
E-mail Address:

 

# Smoking currently causes 4.9 million deaths a year worldwide or 8.8 per cent of all global deaths. Approximately half of all long-term smokers die prematurely because of smoking and it reduces people's life expectancy by an average of 10 years. (See full paper for further referenced statistics).

The Tobacco Dependence Program at the University of Medicine and Dentistry of New Jersey aims to reduce harm to health caused by tobacco use. It does this through education, treatment research and advocacy. www.tobaccoprogram.org

IJCP, the International Journal of Clinical Practice was established in 1946 and is edited by Dr Graham Jackson from Guy's and St Thomas' NHS Foundation Trust, London, UK. It provides its global audience of clinicians with high-calibre clinical papers, including original data from clinical investigations, evidence-based analysis and discussions on the latest clinical topics. The journal is published by Blackwell Publishing Ltd, part of the international Blackwell Publishing group. www.ijcp.org


Related Varenicline News

FDA Approves Varenicline for Smoking Cessation
Varenicline could increase number who quit smoking


For any corrections of factual information, to contact the editors or to send any medical news or health news press releases, use feedback form

Top of Page

 

© Copyright 2004 onwards by RxPG Medical Solutions Private Limited
Contact Us