A small study from Switzerland finds that 95 percent of smokers who used electronic cigarettes to help them quit smoking found the devices effective to some degree, but users also complained about the poor quality of the products, UPI reported May 4.

Researcher Jean-Francois Etter of the University of Geneva and colleagues found that problems cited by e-cigarette users included a lack of reliability and frequent failures.

“Although users’ comments were generally positive, many were concerned about safety and toxicity and questioned why no study has yet investigated these aspects,” Etter said. “Several respondents were also concerned about the future legal status of e-cigarettes, and that they may possibly be banned.”

The findings were published in the May 4, 2010 issue of the journal BMC Public Health.