Table 1

Brands of ENDS and their properties* †

Brand modelsRelative nicotine contentNicotine (mg)Cigarette equivalent§Puffs per cartridgeAvailable flavours
  • NJOY

  • NCIG

  • Website: regular

  • Email: regular

18
  • Website: 40

  • Email: 30

  • Website: no information

  • Email: no response

Regular (traditional), menthol, vanilla, strawberry, and apple
  • Website: light

  • Email: medium

12
  • Website: ultra light

  • Email: low

6
  • Website: none

  • Email: zero

0
Liberty Stix
  • Website: high

  • Email: high

24
  • Website:

  • 1 battery starter kit: 30

  • 2 battery starter kit: 20 cartridges & packs:15-20

  • Email: 15-20

  • Website: 60-80

  • Email: 60-80

Tobacco, mint, vanilla, cherry, chocolate, and coffee
  • Website: medium

  • Email: med

18
  • Website: light/low

  • Email: low

11
  • Website: zero

  • Email: zero

0
  • Crown Seven

  • Hydro

  • Website: high

  • Email: high

16
  • Website: 10

  • Email: 8-10

  • Website: no information

  • Email: 150

Regular (tobacco), menthol, vanilla bean, strawberry, untamed cherry, coffee (espresso), and many others
  • Website: medium

  • Email: med

11
  • Website: low

  • Email: low

6
  • Smoking Everywhere

  • Gold and Platinum

  • Website: extra high(platinum only)

  • Email: no response

24
  • Website: 15–20

  • Email: no response

  • Website: no information

  • Email: no response

Tobacco, menthol
  • Website: high

  • Email: no response

16
  • Website: medium

  • Email: no response

11
  • Website: low

  • Email: no response

6
  • Website: none

  • Email: no response

0
VapCigs
  • Website: high

  • Email: no response

  • Website: no information

  • Email: no response

  • Website: no information

  • Email: no response

  • Website: no information

  • Email: no response

Tobacco, menthol, cherry, java, grape
  • Website: medium

  • Email: no response

  • Website: low

  • Email: no response

  • Website: none

  • Email: no response

  • * ENDS starter kits and refill cartridges were purchased from internet distributers: Liberty Stix (Liberty Stix, Cleveland, OH, USA), Smoking Everywhere Gold and Platinum (Smoking Everywhere, Inc, Sunrise, FL, USA), Crown Seven Hydro (Crown Seven Shop, Scottsdale, AZ, USA), NJOY NCIG (Sottera Inc, Scottsdale, AZ, USA) and VapCigs (VapCigs, Norco, CA, USA).

  • Website information and email correspondence were obtained in March 2010.

  • Nicotine dose (mg) was provided by the manufacturer. The ‘Relative Nicotine Content’ (preceding column) describes the dose in the ‘Nicotine’ column. ‘Content’ given on websites and in responses to our email inquiries sometimes varied.

  • § ‘Cigarette Equivalent’ = the approximate number of conventional cigarettes/one ENDS cartridge as reported on the company's website or in response to an email enquiry.