Taiwan’s Designated Allergens — Yes, Mango: Labeling Rules, Category Traps and the Sulfite Threshold

Every market has an allergen list; Taiwan’s has a personality. Alongside the familiar entries sits one that catches foreign brands off guard year after year — mango — and the sulfite threshold turns a preservative decision into an allergen declaration. Allergen labeling is mandatory for prepackaged foods, enforced at the border and in-market, and it’s one of the top reasons imported foods get flagged. This guide lists Taiwan’s designated allergens, explains how declarations must appear, and walks through the category-specific traps.

Taiwan’s designated allergens

Mandatory declaration covers the following designated categories when present in a prepackaged food:

1. Crustaceans and products thereof
2. Mango and products thereof — the Taiwan-specific entry
3. Peanuts and products thereof
4. Milk and goat milk and products thereof (with narrow exceptions for certain derived ingredients)
5. Eggs and products thereof
6. Tree nuts and products thereof
7. Sesame and products thereof
8. Cereals containing gluten and products thereof (with narrow exceptions for certain derived ingredients)
9. Soybeans and products thereof (with narrow exceptions for certain derived ingredients)
10. Fish and products thereof
11. Sulfites at or above the threshold concentration (10 mg/kg sulfite equivalent) — which makes preservative levels an allergen question

The list and its exceptions follow current TFDA regulations; verify the latest text when engineering labels, because designations and exceptions are amended over time.

How the declaration must appear

• In Traditional Chinese, either as a dedicated allergen statement (a “this product contains…” line) or by clearly identifying the allergen within the ingredient list in the prescribed manner — the practical norm for imports is a clear, separate statement.
• Naming the allergen category, not just the ingredient — an ingredient list that says “whey” without indicating milk, or “shrimp paste” without indicating crustaceans, is incomplete.
• Covering derived ingredients — flavorings, seasonings and compound ingredients that carry allergens must be declared; the ingredient tree, not the headline, decides.
• Precautionary “may contain” statements — permitted for cross-contact risk under Taiwan’s guidance, but they are not a substitute for declaring allergens actually present, and shouldn’t be used as a blanket shield.

Category traps worth naming

1. Anything with mango. Dried fruit mixes, tropical snacks, sauces, beverages and confectionery from Southeast Asia routinely contain mango or mango flavoring derived from fruit — declared nowhere at home, mandatory here.
2. Sulfites in dried fruit, wine, sauces and seafood products. Preservative levels that were purely an additive question (see the additives guide) become an allergen declaration above the threshold — two rules, one ingredient.
3. Nanyang sauces and pastes. Shrimp paste (crustaceans), fish sauce (fish), soy (soybeans), wheat-based thickeners (gluten) — the allergen line on a sambal or laksa paste can run five categories long. Declare them all.
4. Bakery and confectionery. Milk, egg, gluten, nuts, sesame and soy lecithin routinely all appear; “soy lecithin” exceptions are narrow, so don’t assume.
5. Flavorings. “Natural flavoring” can hide dairy, nut or fish derivatives — get the flavor house’s allergen declaration, not just the flavor name.
6. Cross-contact in shared lines. Precautionary labeling is available; decide it consciously per SKU based on your facility’s controls.

The workflow

Map every ingredient (including compound ingredients and flavorings) to Taiwan’s designated categories → confirm sulfite levels analytically where relevant → draft the Chinese allergen statement using Taiwan’s category names → cross-check against the ingredient list and the nutrition panel for consistency (the panel rules are in the nutrition label guide) → review by the importer before artwork. It sits inside the broader label-engineering process in our Chinese labeling guide, and the whole thing is a pre-shipment gate in the food import chain.

FAQ

Why is mango on Taiwan’s allergen list?

Mango allergy is a documented sensitization pattern in Taiwan’s population and the regulator designated it accordingly. For foreign brands the “why” matters less than the “what”: if mango is in the product in any form, declare it.

Does the allergen list apply to foods sold only online?

Yes — it’s a labeling requirement for prepackaged foods regardless of channel, and product pages are expected to reflect the same allergen information.

Can we use our home-market allergen icons or English statements?

Icons and English can appear in addition, but the mandatory declaration is in Traditional Chinese using Taiwan’s category terms. An English-only statement is non-compliant.

What if an allergen is present only in trace amounts?

Present means declare; sulfites have a numeric threshold, the other categories don’t. Precautionary statements cover cross-contact, not intentional ingredients.

Eleven categories, one line, zero excuses

Allergen labeling is the cheapest compliance item on your list and among the most expensive to get wrong. i-connect maps ingredient trees to Taiwan’s designated allergens as part of label engineering for every food brand we onboard. Send us a formulation and we’ll draft its Taiwan allergen line.

Last updated: September 2026