What is Sulphite Sensitivity?

Sulphites (or sulfites) are chemical compounds used as preservatives, antioxidants, and sanitizers in food, beverages, and medicines.
They help prevent browning, spoilage, and bacterial growth. While harmless for most, sulphites can trigger adverse reactions in sensitive individuals.
This is particularly common among people with asthma.

The sensitivity is not always a “true allergy” (IgE-mediated) but rather a chemical intolerance or sensitivity. However, reactions can range
from mild discomfort to serious asthma attacks. Recognizing and avoiding sulphites is essential for managing health.

Symptoms of Sulphite Sensitivity

Reactions to sulphites can vary widely in severity. Common symptoms include:

• Headaches and migraines
• Asthma flare-ups and breathing difficulties
• Flushing and redness of the skin
• Hives or itchy skin
• Stomach pain, nausea, or diarrhea
• In rare cases: anaphylaxis

If you suspect sulphites trigger your symptoms, consult a healthcare professional immediately. Tracking your food intake and symptoms helps identify triggers.

Common Foods Containing Sulphites

Sulphites are present in many packaged and processed foods. Some common sources include:

• Dried fruits (apricots, raisins, prunes)
• Wines and beers
• Bottled lemon and lime juices
• Pickled foods and fermented items
• Canned vegetables (especially potatoes and mushrooms)
• Condiments like vinegar, relishes, chutneys
• Processed meats (sausages, hot dogs, deli meats)
• Soft drinks and some flavored waters

Sulphites are often used in unexpected ways, making label reading critical for sensitive individuals.

Hidden Sources of Sulphites

Beyond food, sulphites can hide in:

• Certain medications (e.g., some asthma inhalers, local anesthetics)
• Cosmetics and personal care products
• Dried herbs, spices, and seasonings
• Restaurant-prepared foods (where preservation is important)

How to Read Labels for Sulphites

On ingredient lists, sulphites may appear as:

• Sulphur dioxide (E220)
• Sodium sulphite (E221)
• Sodium bisulphite (E222)
• Sodium metabisulphite (E223)
• Potassium metabisulphite (E224)
• Calcium sulphite (E226)
• Potassium bisulphite (E228)

By law in many countries, sulphites must be declared on labels if present above 10 ppm (parts per million).

Sulphite Sensitivity vs Sulphite Allergy

Many confuse sulphite sensitivity with sulphite allergy. While both cause reactions, their mechanisms differ:

• Sensitivity: Chemical intolerance, not immune-mediated.
• Allergy: Immune system reaction (IgE antibodies), though rare with sulphites.

Sensitivity is more common and can still be serious, especially for asthmatics.

How Sulphite Sensitivity is Diagnosed

Diagnosis usually involves:

• Detailed food and symptom diary
• Elimination diets supervised by a doctor
• Challenge tests in medical settings
• Review of asthma or allergic history

There is no standard blood test for sulphite sensitivity, making clinical observation essential.

Managing Sulphite Sensitivity

The best way to manage sulphite sensitivity is through strict avoidance. Strategies include:

• Always read ingredient labels carefully
• Choose fresh, whole foods over processed options
• Cook at home to control ingredients
• Use apps like Food Scan Genius to instantly detect sulphites in products
• Inform restaurants of your sensitivity before ordering

Tips for Eating Out Safely

Dining out with sulphite sensitivity can be challenging. Tips include:

• Call ahead and ask about sulphite-free menu options
• Avoid wines, sauces, and dried fruits unless confirmed safe
• Opt for simple, grilled dishes with minimal marinades or sauces
• Keep emergency medication (like asthma inhalers) handy

How Food Scan Genius Helps

At Food Scan Genius, we simplify sulphite management by scanning product ingredients against our database of 5+ million international foods.
With AI-powered ingredient recognition and personalized profiles, you’ll know instantly if a food is safe for you.

Benefits include:

• Quick barcode scans for instant results
• Personalized dietary profiles (allergies, sensitivities, lifestyle choices)
• Global database coverage (products from USA, Europe, Asia, Gulf, and more)
• Smart AI recommendations for safe alternatives

With Food Scan Genius, you don’t need to memorize ingredient codes or stress about eating out—your food safety is in your pocket.

FAQ on Sulphite Sensitivity

1. Are sulphites the same as sulphates?

No, sulphites and sulphates are different compounds. Sulphites are preservatives, while sulphates are salts often found in water and detergents.

2. Can sulphites trigger asthma?

Yes. Up to 10% of asthmatics may be sensitive to sulphites, which can cause severe flare-ups.

3. Do all wines have sulphites?

Almost all wines contain sulphites, though some “low sulphite” or “sulphite-free” wines are available.

4. Are organic foods sulphite-free?

Not necessarily. Organic certification limits sulphite use, but trace amounts may still exist.

5. Can sulphite sensitivity go away?

No, but it can be managed successfully through avoidance and tools like Food Scan Genius.

Conclusion

Sulphite sensitivity can be challenging, but with knowledge, careful choices, and AI-powered tools like Food Scan Genius, you can take control of your diet and health. From scanning barcodes to discovering safe alternatives, we empower you to live confidently, sulphite-free.