Researchers also made assumptions about the amount of caffeine in servings of coffee and tea. The authors acknowledge that there may be information bias in the self-reported baseline intake of ...
Caffeine food supplements can often contain high levels of caffeine, sometimes from multiple ingredients which may themselves be a source of caffeine intake (for example kola nuts, guarana, certain ...
People taking caffeine supplements and powder should take into account other sources like tea, coffee and energy drinks, to avoid consuming dangerous amounts of the stimulant, the Food Standards ...