Starbucks Venti brewed house blend = 415 mg

Tim Hortons large green tea = 35 mg

Regular cup (8 oz) of brewed coffee = 135 mg

Average can of cola = 36-46 mg

Standard (8.46 oz) can of Red Bull = 80 mg

Maximum recommended intake for adults = 400 mg daily.

*All content values are
approximations, as stated by sources.

– Sources: Energy Fiend,    
  Health Canada