Yellow 5
Tartrazine · FD&C Yellow No. 5 · E102
A bright lemon-yellow synthetic dye derived from petroleum byproducts — one of the most-used artificial colors in American snacks, drinks, and convenience foods.
Why we flag it
Yellow 5 is one of the most studied — and most controversial — food dyes in the world. Multiple peer-reviewed studies have linked it to hyperactivity and attention difficulties in sensitive children, and a 2007 University of Southampton trial helped push the European Union to require a warning label on products containing it: "may have an adverse effect on activity and attention in children."
The dye is also a well-documented allergen. The FDA mandates a specific allergen disclosure for Yellow 5 because a small but real percentage of people — particularly those with aspirin sensitivity — experience hives, itching, or asthma-like symptoms after exposure.
Where you'll find it
Anywhere yellow, green, or orange shows up in cheap processed food:
- Mountain Dew, Mello Yello, and other yellow-green sodas
- Mac & cheese (boxed varieties), cheese-flavored crackers and chips
- Pickles, mustard, and other yellow condiments
- Cake mixes, frostings, and packaged baked goods
- Candy, gummies, popsicles, and flavored ice creams
- Sports drinks, fruit punches, and energy drinks
- Some children's medications and vitamins
What to look for instead
Plenty of brands now color foods using plant pigments that deliver similar yellows and oranges:
- Turmeric or curcumin — vivid yellow, the most direct swap
- Annatto (from achiote seeds) — yellow to orange
- Saffron — premium golden-yellow
- Beta-carotene (from carrots) — yellow to orange
- Paprika extract — orange tones
On the label, look for "colored with turmeric," "annatto color," "no artificial colors," or specific natural colorants by name. Organic certification automatically excludes synthetic dyes.