The Caffeine Content of Energy Drinks in accordance with the Information on the Package Label

Table 3

Results on caffeine contents samples (beverages) analyzed in duplicate (S1 and S2) during a study to assess energy drink consumption rate, knowledge, and perceived side effects among long-distance car drivers in Morogoro municipality, Morogoro, Tanzania, 2018-2019.

S/N	Samples	Volume (ml)	Extraction vol.	Anal. vol.	ABS	Conc. (mg/L)	Av. conc. (mg/L)	Conc. (mg/100 ml)	Av. conc. (mg/100 ml)	Caffeine content (mg/100 ml)
1	Dragon S1	1	100	1	3.105	298.7	299.3	29.87	29.33	30.1
		1	100	1	3.117	299.9		29.99
	Dragon S2	1	100	1	3.206	308.8	303.55	30.88	30.355
		1	100	1	3.101	298.3		29.83
2	Azam energy drink S1	1	100	1	2.952	283.4	283.95	28.34	28.395	28.4
		1	100	1	2.963	283.5		28.45
	Azam energy drink S2	1	100	1	2.965	283.4	284.2	28.34	28.42
		1	100	1	2.968	285		28.5
3	Monster energy S1	1	100	1	2.966	284.8	284.6	28.48	28.46	28.5
		1	100	1	2.962	284.4		28.44
	Monster energy S2	1	100	1	2.971	285.3	285.2	28.53	28.52
		1	100	1	2.969	285.1		28.51
4	Mo energy S1	1	100	1	2.938	282	281.4	28.2	28.14	28.1
		1	100	1	2.926	280.8		28.08
	Mo energy S2	1	100	1	2.931	281.3	281.4	28.13	28.14
		1	100	1	2.933	281.5		28.15
5	Power energy S1	1	100	1	2.932	281.4	279.9	28.14	27.99	28.0
		1	100	1	2.902	278.4		27.84
	Power energy S2	1	100	1	2.911	279.3	279.8	27.93	27.98
		1	100	1	2.921	280.3		28.03
6	Kungfu 1	1	100	1	2.926	280.8	280.9	28.08	28.09	28.1
		1	100	1	2.928	281		28.1
	Kungfu 2	1	100	1	2.922	280.4	280.4	28.04	28.04
		1	100	1	2.922	280.4		28.04