Mandarins & Tangerines: Nutrients, What Research Shows and Safety

Mandarins and tangerines are the fruit of Citrus reticulata (and close relatives such as the Satsuma mandarin, Citrus unshiu), in the citrus family (Rutaceae). The juicy segments are eaten, usually fresh and easy to peel. People eat them for vitamin C and fiber and for their orange pigments. This page keeps the whole fruit apart from supplements and from hype. It is information only, not a plan for what to eat.

Read this first

• Allergy to citrus is possible. For trouble breathing or swelling of the face or throat, call 911. See food allergy basics and emergency signs.
• The FDA names grapefruit, Seville oranges, pomelos and tangelos as citrus that can affect some medicines. It does not name mandarins or tangerines. [1] Still ask a pharmacist about your own medicines.
• Mandarins are an ordinary food, a useful source of vitamin C, and eating enough vitamin C prevents scurvy. [2][3] The other health claims are weaker: most come from observational studies or small trials. Nothing here shows that mandarins prevent or treat a disease.

What is in it (USDA values)

USDA FoodData Central lists raw tangerines (mandarin oranges). [4] The typical serving below is the USDA household portion "1 medium (2-1/2 inch diameter)", 88 g.

The USDA also lists 1 cup of sections as 195 g, a small fruit as 76 g and a large fruit as 120 g. [4] % Daily Value uses the FDA 2016 Daily Values; values vary with variety, ripeness and storage.

Citrus fruits contain flavonoids (plant pigments such as hesperidin) and carotenoids (orange pigments). One review of citrus describes both groups, and says mandarin is a notable source of beta-cryptoxanthin, a carotenoid the body can turn into vitamin A. [8][9] Much of the work on these compounds is from the lab, animals, or supplements, so it does not show what eating a mandarin does. [8]

What research says

Eaten as food vs taken as a supplement or extract. The Cochrane colds result and the beta-cryptoxanthin trial used supplements, not fruit, and do not tell us what a mandarin does. The heart and death data are observational and cover many fruits together. We found only one small human trial of the whole fruit. [7] We did not find a trial showing that mandarins treat a disease: Proper evidence not found in the sources we read.

How much is a normal serving

The USDA household portions are one medium fruit (88 g) or 1 cup of sections (195 g). [4] We could not open the USDA MyPlate page for official daily fruit amounts, so we give no daily-amount figure here; ask a dietitian or see the national guidance for your country. This is information, not a prescription.

• Fresh vs canned or juice: the USDA record above is for raw fruit. Canned segments and juice differ in fiber and sugar, so check labels. See fruit juice vs whole fruit.
• Cooking and storage: MedlinePlus says cooking, long storage, microwaving, steaming and light can lower the vitamin C in produce. [3]

Safety, allergy and medicines

• Allergy. A 2025 report of five patients with immediate reactions to orange found a shared protein in orange, lemon and mandarin peel that their antibodies recognised, so reactions across citrus are possible. [11] Mouth itching after fruit can be pollen-food allergy syndrome, which can rarely become more serious. [12] For trouble breathing or swelling of the face or throat, call 911; see when to seek medical help after a food reaction.
• Medicines. The FDA says grapefruit juice can change how some medicines work and that Seville oranges, pomelos and tangelos might do the same. Mandarins and tangerines are not named. [1] A tangelo is partly a mandarin cross, so check the label if you buy one. Ask your pharmacist or prescriber; see foods and medicine interactions.
• Potassium and kidney disease. The National Kidney Foundation lists whole oranges and orange juice among higher-potassium fruits but lists whole tangerines and mandarin oranges as lower-potassium. [13] People with kidney disease should still follow their own dietitian's advice. See kidney disease, potassium and oxalates.
• Too much vitamin C. From supplements, more than 1,000 mg a day can cause stomach pain and diarrhoea (NHS), and MedlinePlus says intake above 2,000 mg a day is not recommended and large supplemental doses are not recommended in pregnancy. [2][3] These limits concern supplements; they are not a reason to avoid eating fruit.
• Sugar. A medium fruit has about 9 g of natural sugar with 1.6 g of fiber. [4] Whether this matters for blood sugar is a question for your own clinician; we did not find a source on mandarins and blood sugar control: Proper evidence not found.
• Pesticide residues, sulphites and choking: the sources we read for this page do not cover these for mandarins. Washing is covered below. Segments are small enough to be a choking risk for very young children; see foods for babies and toddlers.

Choosing, storing and food safety

• Choose fruit that is not bruised or damaged, and cut away bruised areas. [14]
• Rinse fruit under running water even if you will peel it, because germs on the skin can reach the flesh on your hands and knife. Do not use soap, detergent or produce wash. [14]
• Refrigerate cut or packaged fruit at 40°F (4°C) or below. [14]

Related pages

• Citrus fruits
• Fruit juice vs whole fruit
• Fresh, frozen and canned produce
• Foods and medicine interactions: vitamin K, grapefruit and others
• Food allergy basics and emergency signs
• Bitter orange (a different citrus, sold as a supplement)