Table 1 Comparison of product performance characteristics and primary ingredients of combustible cigarettes (CC), Heated Tobacco Products (HTP), and e-cigarettes (EC)

Nicotine

Yes

Yes

Yes

(in most products*)

Tobacco

Yes

Yes

No

(nicotine in a form of liquid solution)

Combustion

Yes

No

(a potential risk of incomplete combustion)

No

(a potential risk of thermal degradation of nicotine solution ingredients)

Temperature

Yes

(very high during puffs)

Yes

(generally lower than in combustible cigarettes)

Yes

(generally lower than in combustible cigarettes)

Electronic system

No

Yes

Yes

Example of the product