Black tea brewed to average strength provides caffeine (typically 40-60mg per 200ml mug), theaflavins and thearubigins (polyphenols formed during oxidation), manganese, and fluoride. Large epidemiological studies associate regular tea consumption with reduced risk of cardiovascular disease and type 2 diabetes. Drunk without milk, it is virtually calorie-free. Milk proteins bind some polyphenols but do not eliminate the benefit.
Brew for 2-3 minutes for average strength; longer steeping increases caffeine and tannins (which can inhibit iron absorption). If relying on plant iron sources, avoid drinking tea within an hour of meals.
Where Tea, black, infusion, average Stands Out
Macronutrients per 100g
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 27.0 mg | 1% | |
| Folate | 3.00 µg | 2% | |
| Magnesium | 2.00 mg | 1% | |
| Phosphorus | 2.00 mg | 0% | |
| Chloride | 1.00 mg | 0% | |
| Vitamin K | 0.270 µg | 0% | |
| Manganese | 0.150 mg | 8% | |
| Pantothenic Acid (B5) | 0.040 mg | 1% | |
| Riboflavin (B2) | 0.020 mg | 1% | |
| Copper | 0.010 mg | 1% | |
| Selenium | 0.000 µg | 0% | |
| Vitamin B12 | 0.000 µg | 0% | |
| Vitamin B6 | 0.000 mg | 0% | |
| Calcium | 0.000 mg | 0% | |
| Niacin (B3) | 0.000 mg | 0% | |
| Thiamin (B1) | 0.000 mg | 0% | |
| Vitamin D | 0.000 µg | 0% | |
| Vitamin A (RE) | 0.000 µg | 0% | |
| Zinc | 0.000 mg | 0% | |
| Niacin equivalents (NE) | 0.000 mg | 0% | |
| Iron | 0.000 mg | 0% | |
| Vitamin C | 0.000 mg | 0% | |
| Iodine | 0.000 µg | 0% | |
| Maltose | 0.000 g | — | |
| Fructose | 0.000 g | — | |
| Sucrose | 0.000 g | — | |
| Glucose (dextrose) | 0.000 g | — | |
| Cholesterol | 0.000 mg | — | |
| Beta-carotene | 0.000 µg | — | |
| Biotin (Vitamin B7) | 1.00 µg | 2% | |
| Retinol (vitamin A) | 0.000 µg | 0% |
* % Daily Value is the proportion of an adult
EU Nutrient Reference Value (NRV) supplied by 100g of this food.
NRVs are the labelling standard — the same basis as the “%RI” figures printed on
food packaging — so these percentages are directly comparable with a shop label.
They are a single adult figure and do not vary by age or sex, which is why they
sometimes differ from UK dietary reference values: the NRV for vitamin C is 80mg
where the UK RNI is 40mg. When Nutriofia assesses your own intake in the
reports and trackers, it uses the age- and sex-specific UK values instead.
Fibre is shown without a percentage. Our fibre values use the UK
Englyst NSP method, while the published 30g daily goal is an AOAC figure — the two
are measured differently and a single percentage would mislead.
How we source and normalise our data →