Cilantro
Fresh green leaves of Coriandrum sativum with a bright, citrusy, slightly peppery flavor; called coriander leaf or Chinese parsley outside the U.S.
Should I eat Cilantro?
Cilantro is a minimally processed herb that’s safe for most people, adds flavor without calories, and offers some vitamin K. The main cautions are rare allergies and keeping intake consistent if you take warfarin.
Summary
Cilantro (coriander leaf) is a traditional flavoring herb recognized as safe by regulators when used as a spice or flavoring. It contributes meaningful vitamin K per cup with very few calories and contains antioxidant phytochemicals, though human health outcome evidence remains limited. Allergy to cilantro is uncommon but can be severe, and cross‑reactivity with other Apiaceae spices is reported; it may also appear under generic 'spice' or 'flavor' on labels. For people on warfarin, the key is consistency of vitamin K intake. Overall, cilantro can be part of a health‑conscious diet, with a few targeted precautions for sensitive groups.
Key Research Benefits
Notable vitamin K with almost no calories
Cilantro provides meaningful vitamin K per cup while adding negligible calories.
Phytonutrients with antioxidant activity
Leaf compounds show antioxidant and antimicrobial properties in preclinical work; human outcome data are still limited.
Adds flavor without added sodium or sugar
As a spice/seasoning used for taste rather than nutrition, cilantro boosts flavor without adding sodium, sugar, or fat.
Key Research Risks
Allergy and cross‑reactivity
Cilantro can trigger IgE‑mediated reactions in a small subset of people, sometimes severe, and may cross‑react with other Apiaceae spices.
Vitamin K–drug interaction relevance
Because cilantro is relatively high in vitamin K per cup, inconsistent intake may interfere with warfarin dosing.
Processing and concentrates
Cilantro leaf is minimally processed; dried leaf and leaf/seed oils are flavorings recognized as safe, but concentrates may be listed generically as 'flavoring,' which complicates avoidance for allergic individuals.
Overview
What is it?
Why is it used?
Origin
Cilantro is the leaf of Coriandrum sativum, an annual in the Apiaceae family (with parsley, dill, and cumin). Thought to be native to the Mediterranean and Western Asia, coriander has been found in ancient Egyptian tombs and was mentioned in the Old Testament. The plant spread along trade routes into India, China, and the Americas; today the leaf (cilantro) is prized in Mexican and Southeast Asian dishes, while the dried fruit (coriander seed) flavors spice blends like garam masala.
Process: Harvest, clean, optionally dry and mill
Steps
Chemicals
Research & Safety
Potential Concerns
Allergic reactions to cilantro are rare but can be serious in sensitized people. Because it belongs to the Apiaceae family, some individuals who react to spices like cumin, dill, or fennel may also react to cilantro. Cilantro’s vitamin K content is meaningful per cup; if you take warfarin, large swings in intake can affect your dosing—consistency is key. Cilantro leaf is minimally processed; dried leaf and cilantro oils are flavorings recognized as safe, and there is no hydrogenation or heavy refining involved. For allergic consumers, concentrates may appear under generic 'flavoring' on labels, which can make avoidance harder.
Potential Benefits
Cilantro adds bright flavor with almost no calories, which helps keep foods tasty without adding sodium or sugar. A cup of chopped leaves contains around 50 micrograms of vitamin K, a nutrient your body uses for normal blood clotting and bone health. The leaves also carry polyphenols and terpenes with antioxidant activity, though human studies showing disease‑level benefits are still limited. Overall, it is a low‑energy way to add micronutrients and plant compounds to meals.
Digestive Effects
For most people, typical culinary amounts of cilantro do not cause digestive issues. Very large raw servings could cause mild stomach upset in sensitive individuals, but this is uncommon. People with true cilantro or Apiaceae spice allergy can experience oral itching, hives, wheeze, or even anaphylaxis, which is a medical emergency. If you suspect an allergy, seek evaluation and avoid products listing 'spice' or 'natural flavor' unless the contents are confirmed.
Limit Consumption
People with known spice allergies—especially to Apiaceae family members like cumin, dill, or fennel—should be cautious due to documented cross‑reactivity and rare anaphylaxis reports. Those on warfarin should keep vitamin K intake steady; cilantro can contribute meaningfully if eaten in large or frequent servings. Infants and children can have cilantro in normal culinary amounts as part of age‑appropriate textures; allergy is uncommon but possible. Allergic individuals should be aware cilantro may be present as a component of 'spices' or 'flavorings' on labels or in flavored beverages.
Fact Sheet
Regulatory Status
ESG & Sustainability
Allergens and Diet
Natural Alternatives
Parsley
Thai basil
Dill
Citations
21 CFR § 182.10 — Spices and other natural seasonings and flavorings
2024-01-01U.S. FDA • eCFR (FDA)
21 CFR § 101.22 — Foods; labeling of spices, flavorings, colorings
2024-01-01U.S. FDA • eCFR (FDA)
Coriander Leaf Oil (Cilantro Oil) — §182.20
2024-01-01FDA • FDA Food Substances
Safety of Coriander Seed Oil
2013-10-24EFSA NDA Panel • EFSA Journal
A genetic variant near olfactory receptor genes influences cilantro preference
2012-09-11Eriksson N., et al. • Flavour (BMC)
Anaphylaxis following cilantro ingestion
2012-12-01Unkle D.W., et al. • Ann Allergy Asthma Immunol.
Beer anaphylaxis due to coriander as hidden allergen
2018-07-01Brussino L., et al. • PMC (Case report)
Cilantro, raw — nutrition facts
2024-01-01NutritionValue.org • NutritionValue (USDA-sourced)