Order protocol
Sleep & recovery Whole topic
Hormones & energy Whole topic
Metabolism & nutrition Whole topic
Brain & mind Whole topic
Longevity & body Whole topic
Women & family Whole topic
Basics & environment Whole topic
Biohacking & technology Whole topic
Fénix Methode

Tired of generic advice? A protocol built on your numbers.

Order protocol
All articles Every article is based on a chapter of the book NAVRHNUTÝ and peer-reviewed studies.
Biohacker score2 minutes – find out where your body holds you back Results checkNormal vs. optimal for your blood values Biological ageHow old your body is – from 9 blood values CalculatorsBMI, waist, protein, sleep, caffeine, VO2max Daily helperDaily routines, light, sleep and breathing on your phone My stackCheck supplements & medication + daily plan ChallengesSmall daily habits with reminders Fitness testVO2max, fitness age, strength and balance at home Biological twinAll your data in a 3D body What to get testedPrintable list of blood tests Sample protocolSee what you get E-numbers & sugarsWhat is on the label and what to avoid Online advisorAnswers to common questions about body and results SupplementsForms, timing and combination check RecipesMeals without hidden sugars or needless additives GlossaryBiohacking explained from A to Z Gift voucherGive health – the protocol or the book
← Back to the E-number overview
E102Avoid

Tartrazine

Group: Colours · in the book

Harm level4 of 5Better avoid

In plain words

Tartrazine is an artificial yellow dye that gives foods a bright lemon colour. It appears in some sweets, soft drinks, puddings and snacks.

Where you find it: yellow soft drinks, sweets, puddings, instant soups

Our recommendation

Best avoided in future, especially in foods for children.

Possible risks and effects

  • Possible effect on activity and attention in children (Southampton study).
  • Allergic-type reactions (hives, asthma), more often in people sensitive to aspirin.

For experts

A synthetic pyrazolone azo dye. EFSA re-evaluated it in 2009 and kept the ADI at 7.5 mg/kg body weight. In the EU, labels must state "may have an adverse effect on activity and attention in children".

Check another E-number

More from this group

E171Titanium dioxideE104Quinoline yellowE110Sunset Yellow FCFE122Azorubine (carmoisine)E124Ponceau 4RE129Allura Red ACE120Carmine (cochineal)E127Erythrosine

This information is educational and based on EFSA assessments and available studies; it does not replace medical advice. With allergies, intolerances or illness, follow your doctor’s advice.