Many use l-theanine to improve stress disorders, mood and sleep hygiene. Yes. While black tea has less caffeine than coffee, it’s still a caffeinated beverage. Black tea has about 47 milligrams ...
“Black tea can have an astringent effect at the intestinal level, causing constipation or increased irritability of the colon,” according to the nutrition team at wellness company Marta Masi. Despite ...
Globally, caffeine is a widely used stimulant typically consumed through drinks such as coffee, tea, and energy drinks ... you should consider the caffeine content of the supplement.
However guidance has been issued over food supplements containing caffeine, sometimes from multiple ingredients such as kola nuts, guarana and certain tea leaves such as black tea. Caffeine is ...
Guidance has been issued regarding food supplements containing caffeine, which can sometimes be derived from multiple sources such as kola nuts, guarana and certain types of tea leaves like black ...