Table 1.

Computed nicotine flux by tobacco product category. N indicates the number of products reported, while year span indicates years of publication for the studies included. SD = standard deviation.

			Flux (μg/s)
Product	N	Year span	Mean (SD)	Range
Combustible cigarettes	27	1988–2020	79(32)	29–140
ENDS	52	2015–2021	29(23)	3.7–110
Heated tobacco products	14	2018–2020	31(18)	5.8–58
Waterpipe	8	2003–2019	11(5.6)	5.8–20
Cigars/cigarillos	9	1976–2018	62(35)	12–110
Roll your own	3	1985–2014	69(28)	52–100
Bidi	2	1988–2003	60(6.8)	55–64
Kretek	3	2014	47(16)	29–60
Nicotine patch and gum products	4	2018–2019	0.4(0.48)	0.08–1.1
Very low nicotine cigarettes	1	2019	1.7(-)	-