Sensitising Additive Check

Written by the Natural Supplements Singapore editorial team · Last updated: 24 July 2026

A sensitising additive check helps Singapore supplement buyers distinguish a named ingredient warning from broad “natural”, “no added”, or “sugar free” wording. This educational guide, not medical advice, shows how to record HSA-listed substances and compare the ingredient and warning sections without turning a label observation into a safety verdict.

What HSA's three-name rule says

The September 2023 HSA labelling standards say certain inactive substances that exhibit sensitising effects are required to be declared. The document names benzoic acid, sodium benzoate, and tartrazine. This official rule was checked on 24 July 2026.

That short list is a declaration check, not a complete catalogue of substances that could matter to every buyer. HSA also encourages dealers to review other sensitising agents and declare them where necessary. Separately, the January 2026 Health Supplements Guidelines say product-label information should be adequate and truthful so consumers can make informed decisions and use the product correctly.

Do not invert the rule. If none of the three names is visible on a web page, that does not prove the current pack contains none of them. The page may be abbreviated, outdated, or organised differently from the physical label.

Build a three-substance declaration record

The table below is the first original element in this guide. It converts HSA's named rule into a repeatable label record, captured on 24 July 2026.

HSA-named substance Exact text to search for What a match establishes What it does not establish
Benzoic acid “benzoic acid” The name appears in the checked label or page The amount, individual suitability, or product quality
Sodium benzoate “sodium benzoate” The named substance is disclosed That every other inactive ingredient is shown
Tartrazine “tartrazine” The colour name appears in the checked source A diagnosis, reaction risk, or recommendation

Record the source type beside each result: physical pack, official brand page, retailer page, or marketplace listing. Add the capture date and write “not shown on checked source” instead of “absent” when the available evidence is incomplete.

Compare two live Singapore label pages

Two official Swisse Singapore pages show why the ingredient list and warning text should be read together. Captured on 24 July 2026, the Kids Multi Gummies page labelled functional classes including bulking agent, gelling agent, acid, sweetener, colour, flavour, coating, glazing agent, and stabiliser. It separately stated that the product contains sulfites and porcine gelatine, and gave a specific caution for the listed maltitol and mannitol amount.

The Kids Multi chewable-tablet page used a different function map: humectant, flavours, thickener, anti-caking agent, sweetener, and colours. Its separate contains line named phenylalanine, soya bean, sucralose, and sulfites.

Live page Function-labelled details Separate warning or contains details Careful reading result
Kids Multi Gummies Maltitol syrup, mannitol, plant concentrates, flavours, coating ingredients Sulfites, porcine gelatine, plus the page's maltitol-and-mannitol caution “No artificial sweeteners” wording does not replace the detailed sweetener and warning lines
Kids Multi chewable tablet Sorbitol, silica, magnesium stearate, sucralose, iron oxide colours Phenylalanine, soya bean, sucralose, and sulfites “Sugar free” or “no added” wording does not replace the contains line

This dated dosage-form comparison is the second original element. It describes how the two live pages organise information; it does not rank the products, compare benefits, or determine suitability for a child or adult.

Use a seven-step warning check

  1. Read the physical pack when available, then compare it with the current official product page.
  2. Search for the exact HSA-named terms: benzoic acid, sodium benzoate, and tartrazine.
  3. Copy function labels such as sweetener, colour, humectant, coating, or anti-caking agent without guessing their purpose beyond the label.
  4. Keep the main ingredient panel, “contains” line, warning text, and “no added” claims in separate fields.
  5. Record the dosage form because a gummy, chewable tablet, capsule, and powder can use different supporting ingredients.
  6. Add the URL and capture date; save a pack photo or ask the seller for the current label when the web page is incomplete.
  7. Refer personal allergy, sensitivity, medicine, pregnancy, child-use, or reaction questions to a qualified doctor or pharmacist.

The aim is traceability. A short record makes it easier to compare what was actually disclosed without treating a marketing phrase as a complete ingredient statement.

FAQ

Are benzoic acid, sodium benzoate, and tartrazine banned in Singapore supplements?
The cited HSA labelling standard says these inactive substances must be declared when present because they exhibit sensitising effects. A declaration requirement is not the same as a blanket ban.

Does “natural colour” mean no additive warning is needed?
Not by itself. “Natural” describes marketing or ingredient wording, while the warning check asks what the detailed label and contains statements disclose. Read both.

Can I conclude that a substance is absent if an online page does not name it?
No. Record “not shown on checked source” unless the current physical label or a complete authoritative ingredient statement supports a stronger conclusion.

Does a contains statement prove a product is unsafe?
No. It is disclosure evidence, not an individual risk assessment. Personal suitability depends on context that a general article cannot evaluate.

Keep the check within its limits

A sensitising additive check can improve label comparison, but it cannot diagnose an allergy, predict a reaction, select a dose, or decide whether a supplement is suitable. This article is general consumer education, not medical advice, diagnosis, treatment, or a recommendation to use or stop a product. If you have allergies or sensitivities, take medicines, are pregnant or nursing, are buying for a child, or are concerned about a reaction, speak with a qualified doctor or pharmacist.

Related reading: Clean Label Checklist · Definitions · Reading Supplement Labels · Common Supplement Fillers

Sources

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