Common drinks and foods and their typical caffeine content

Drink or food	Caffeine content
Cola and other “energy” drinks	12-60 mg/300 ml can
Bottled iced tea	15-25 mg/300 ml bottle
Brewed tea (non-herbal)*	20-50 mg/cup†
Mate (South American tea)	30-60 mg/cup
Decaffeinated coffee	4-8 mg/cup
Instant coffee	40-140 mg/cup
Brewed coffee	60-200 mg/cup
Chocolate	5-35 mg/50 g bar

*Twenty per cent more than this for tea brewed for more than 3 minutes.

†Taken to be a 300 ml (∼10 fl oz) cup.