black tea
2 interactions related to black tea
black tea + iron
Black tea is rich in polyphenols (tannins) that bind iron in the digestive tract. When the two are taken together, less of the iron your body needs gets absorbed.
black teairontanninsnon-heme ironabsorptionpolyphenolsanemiaferrous sulfate
black tea + thiamine
Black tea contains antithiamine factors - polyphenols such as tannins and chlorogenic acid - that can oxidise thiamine (vitamin B1) into biologically inactive forms in the gut before it is absorbed. Heavy habitual tea consumption has been linked to lower thiamine status, mainly in people whose dietary B1 intake is already marginal. For most well-nourished adults the effect is modest.
black teathiaminevitamin b1antithiamine factorspolyphenolsberiberiabsorptionb-complex