| Allergen source | Allergens | Cross-reactivity | Allergic potential | Common symptoms |
|---|---|---|---|---|
| Coconut (Cocos nucifera) | 7S and 11S storage proteins (no official food-allergen names; Coc n 1 is a pollen allergen) | Uncommon with tree nuts; no documented cross-reactivity with palm fruit | Rare, but anaphylaxis is reported | Hives, swelling, digestive symptoms, anaphylaxis |
| Palm fruit (Elaeis guineensis) | No officially named allergens | No documented cross-reactivity with coconut | Rare | Mostly skin reactions reported |
| Latex (Hevea brasiliensis) | Hev b 1–15 | Latex-fruit syndrome: banana, avocado, kiwi, chestnut. Coconut is not a recognized latex-fruit food. | Can cause anaphylaxis; less common since powder-free and non-latex gloves | Hives, breathing difficulty, anaphylaxis |
Key Insights
- Coconut has no officially named food allergens. Coconut food allergy is linked to 7S and 11S storage proteins; Coc n 1 (vicilin-like) is registered only as a pollen allergen, and no coconut lipid transfer protein (LTP) has been identified as an allergen.
- Clinical cross-reactivity between coconut and tree nuts is uncommon, and no cross-reactivity between coconut and palm fruit has been documented.
- Palm fruit allergy is extremely rare, with limited data on cross-reactivity with coconut or other allergens.
- Latex allergy (Hev b 1–15) is a well-documented allergy that cross-reacts with fruits such as banana, avocado, kiwi, and chestnut, known as Latex-Fruit Syndrome.
- Latex allergy can cause severe reactions, including anaphylaxis. Coconut allergy is rare but can also cause anaphylaxis; palm fruit allergy is rare.
- Coconut is not a recognized latex-fruit food, and latex allergy has not been shown to raise the risk of reacting to coconut or palm fruit. Ask an allergist about any specific food.
Anaphylaxis: act fast. After an exposure, any breathing symptom (wheeze, repeated cough, throat tightness, hoarse voice), fainting or dizziness, or symptoms in two or more body systems (for example hives plus vomiting) is anaphylaxis — even without hives.
- Give epinephrine right away (auto-injector or nasal spray). Do not wait to see if symptoms get better.
- Call 911, even if symptoms improve.
- Lie flat with legs raised (sit up if breathing is hard). Give a second dose after 5–15 minutes if there is no improvement.
Antihistamines and steroids do not treat anaphylaxis and must never delay epinephrine. Carry two doses and follow the written emergency action plan from your allergist.