Products containing tartrazine commonly include processed commercial foods that have an artificial yellow or green color, or that consumers expect to be brown or creamy looking. It has been frequently used in the bright yellow coloring of imitation lemon filling in baked goods. The following is a list of foods that may contain tartrazine: Buy Tartrazine powder CAS 1934-21-0

Desserts and confectionery: ice cream, ice pops and popsicles, confectionery and hard candy (such as gummy bears, Peeps marshmallow treats, etc.), cotton candy, instant puddings and gelatin (such as Jell-O), cake mixes, pastries (such as Pillsbury pastries), custard powder, marzipan, biscuits, and cookies.
Beverages: soft drinks (such as Mountain Dew), energy and sports drinks, powdered drink mixes (such as Kool-Aid), fruit cordials, and flavored/mixed alcoholic beverages. Buy Tartrazine powder CAS 1934-21-0
Snacks: flavored corn chips (such as Doritos, nachos, etc.), chewing gum, popcorn (both microwave and cinema-popped), and potato chips. Buy Tartrazine powder CAS 1934-21-0
Condiments and spreads: jam, jelly (including mint jelly), marmalade, mustard, horseradish, pickles (and other products containing pickles such as tartar sauce and dill pickle dip), and processed sauces.
Other processed foods: cereal (such as corn flakes, muesli, etc.), instant or “cube” soups, rices (like paella, risotto, etc.), noodles (such as some varieties of Kraft Dinner), pureed fruit and pickled peppers, bright-green-colored seaweed salad. Buy Tartrazine powder CAS 1934-21-0
Personal care and cosmetics products
A number of personal care and cosmetics products may contain tartrazine, usually labelled as CI 19140 or FD&C Yellow 5, including:Buy Tartrazine powder CAS 1934-21-0

Liquid and bar soaps, green hand sanitizer, moisturizers and lotions, mouth washes, perfumes, toothpastes, and shampoos, conditioners and other hair products.
Cosmetics, such as eyeshadow, blush, face powder and foundation, lipstick, etc. – even those that are primarily pink or purple. (Usually make-up manufacturers use one label for all shades in a product line, placing the phrase “may contain” ahead of all colors that are used in that line, not necessarily that specific shade.)Buy Tartrazine powder CAS 1934-21-0
Nail polish, nail polish remover, temporary tattoos, and tanning lotions.
Medications Buy Tartrazine powder CAS 1934-21-0
Various types of medications include tartrazine to give a yellow, orange or green hue to a liquid, capsule, pill, lotion, or gel, primarily for easy identification. Types of pharmaceutical products that may contain tartrazine include vitamins, antacids, cold medications (including cough drops and throat lozenges), lotions and prescription drugs. Buy Tartrazine powder CAS 1934-21-0

Most, if not all, medication data sheets are required to contain a list of all ingredients, including tartrazine. Some include tartrazine in the allergens alert section. Buy Tartrazine powder CAS 1934-21-0

The Canadian Compendium of Pharmaceuticals and Specialties (CPS), a prescribing reference book for health professionals, mentions tartrazine as a potential allergy for each drug that contains tartrazine.

Other products of Tartrazine powder CAS 1934-21-0

Other products, such as household cleaning products, paper plates, pet foods, crayons, inks for writing instruments, stamp dyes, face paints, envelope glues, and deodorants, may also contain tartrazine.

Chemistry of Tartrazine powder CAS 1934-21-0

Tartrazine is water-soluble and has a maximum absorbance in an aqueous solution at 425 nm. It is one of the oldest known members of the pyrazolone family of dyes.

Potential health effects on humans

Sensitivity of  Tartrazine powder CAS 1934-21-0
Tartrazine appears to cause the most allergic and intolerance reactions of all the azo dyes, particularly among asthmatics and those with an aspirin intolerance. Symptoms from tartrazine sensitivity can occur by either ingestion or cutaneous exposure to a substance containing tartrazine. Symptoms appear after periods of time ranging from minutes up to 14 hours.

The prevalence of tartrazine intolerance is estimated at 360,000 U.S. Citizens affected, less than 0.12% of the general population. According to the FDA, tartrazine causes hives in fewer than 1 in 10,000 people, or 0.01%.

It is not clear how many individuals are sensitive or intolerant to tartrazine, but the University of Guelph estimates that it is 1 to 10 out of every ten thousand people (0.01% to 0.1% of the population). There is much controversy about whether tartrazine has ill effects on individuals who are not clearly intolerant.

Total avoidance is the most common way to deal with tartrazine sensitivity, but progress has been made in reducing people’s tartrazine sensitivity in a study of people who are simultaneously sensitive to both aspirin and tartrazine.

Asthma Tartrazine powder CAS 1934-21-0
A systematic review of the medical literature concluded that among patients with asthma, research has shown that exposure to tartrazine does not worsen symptoms and avoidance of tartrazine does not improve symptoms; however, “due to the paucity of evidence, it is not possible to provide firm conclusions as to the effects of tartrazine on asthma control”.

Food intolerance and ADHD-like behavior

Although tartrazine is one of various food colors said to cause food intolerance and ADHD-like behavior in children, evidence for this claim is lacking.[18] It is possible that certain food colorings may act as a trigger in those who are genetically predisposed, but the evidence for this effect is weak.

Cancer  Tartrazine powder CAS 1934-21-0
A 2015 study found that Yellow 5 caused damage to white blood cells, which may make the development of tumors and diseases such as cancer more likely.

Some studies suggested that tartrazine can cause kidney tumours in laboratory animals.

Myths  Tartrazine powder CAS 1934-21-0
Rumors began circulating about tartrazine in the 1990s regarding a link to its consumption (specifically its use in Mountain Dew) and adverse effects on male potency, testicle and penis size, and sperm count. There are no documented cases supporting the claim tartrazine will shrink a penis or cause it to stop growing.

Tartrazine is listed as a permitted food coloring in Canada.[25] The majority of pre-packaged foods are required to list all ingredients, including all food additives such as color; however section B.01.010 (3)(b) of the Regulations provide food manufacturers with the choice of declaring added color(s) by either their common name or simply as “colour”.

In February 2010, Health Canada consulted the public and manufacturers on their plans to change the labelling requirements. Health Canada felt that it might be prudent to require the identification of specific colors on food labels, to allow consumers to make better informed choices. The results of the consultation supported increased transparency. Some respondents proposed banning the use of synthetic food colors, however Health Canada found that existing scientific literature does not demonstrate that synthetic food coloring is unsafe in the general population; they are instead considering more transparent labelling to allow those with sensitivities to food color to make informed choices. The relevant proposed regulatory changes will be developed and published for consultation in Part I of the Canada Gazette, the official newsletter of the Government of Canada.

United States
The United States requires the presence of tartrazine to be declared on food and drug products (21 CFR 74.1705 (revised April 2013), 21 CFR 201.20) and also color batches to be preapproved by the United States Food and Drug Administration (FDA). As part of these regulations, the FDA requires that the Precautions section of prescription drug labels include the warning statement, “This product contains FD&C Yellow No. 5 (tartrazine) which may cause allergic-type reactions (including bronchial asthma) in certain susceptible persons. Although the overall incidence of FD&C Yellow No. 5 (tartrazine) sensitivity in the general population is low, it is frequently seen in patients who also have aspirin hypersensitivity.”

The FDA regularly seizes products if found to be containing undeclared tartrazine, declared but not FDA-tested, or labeled something other than FD&C yellow 5 or Yellow 5. Such products seized often include noodles.