Electronic cigarettes, also known as vaporizer cigarettes and e-cigarettes, are devices that people use, often instead of tobacco cigarettes, that release doses of water vapor that may or may not include nicotine. E-cigarettes are powered by a small battery.
Manufacturers, distributors and marketers of electronic cigarettes say that they are an effective and healthier alternative to tobacco smoking, because the user does not inhale harmful tobacco smoke, which contains over 4,000 toxic chemicals.
Regular e-cigarette users say that the device offers them a similar sensation to tobacco-cigarette smoking. However, as there is no combustion involved – there is no smoke.
The USP stands for United States Pharmacopeia. The EP stands for European Pharmacopoeia.
The USP is the official pharmaceutical compendium in the United States. It includes –
- Chemical descriptions
- Identifying tests
- Purity tests
- Active ingredients
USP grade is pharmaceutical grade (the same grade a drug company or pharmacist manufacturing or compounding a formulation for human use would be required to utilize) is the only grade that has any FDA regulation and oversight associated with it’s manufacture, labeling and marketing.
Electronic cigarettes, seen by many as a healthy alternative to tobacco smoking, do cause damage to the lungs, scientists from the University of Athens, Greece, explained at the European Respiratory Society’s Annual Congress 2012, Vienna, on Sunday. Electronic cigarettes, also called e-cigarettes have also been marketed as effective smoking cessation devices.
Professor Christina Gratziou and team set out to determine what the short-term effects of smoking with e-cigarettes might be on different individuals, including those with no known health problems, as well as existing smokers with and without lung conditions.
They carried out experiments on 32 volunteers; of whom 8 were lifetime non-smokers and 24 were current regular smokers. Some of them had healthy lungs, while others lived with asthma or COPD (chronic obstructive pulmonary disease).
They were asked to use an electronic cigarette for 10 minutes, inhaling the vapors into their lungs. A spirometry test, as well as some others diagnostic procedures were used to measure their airway resistance. Airway resistance is used in respiratory physiology to measure the resistance of the respiratory tract to airflow coming in during inspiration (inhalation) and going out during expiration (exhalation).
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