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The US and international formulas are not the same— here's exactly what changed and why.
McDonald's USA
Ingredients
Potatoes, Vegetable Oil (Canola Oil, Corn Oil, Soybean Oil, Hydrogenated Soybean Oil), Natural Beef Flavor (Wheat and Milk Derivatives), Dextrose, Sodium Acid Pyrophosphate, Salt, Dimethylpolysiloxane
⚠️ Preservatives
Dimethylpolysiloxane (anti-foaming agent in oil)
Ingredients
Potatoes, Vegetable Oil (Sunflower Oil, Rapeseed Oil), Dextrose, Sodium Acid Pyrophosphate, Salt
| Ingredient | 🇺🇸 US Version | 🌍 International | Status |
|---|---|---|---|
| Dimethylpolysiloxane | 🚫 Present |
| ✅ Not present |
| Banned Overseas |
| Partially Hydrogenated Oils | ✅ Not present | ✅ Not present | Banned Overseas |
The same company makes both versions — but they use different formulas depending on where the product is sold. In the EU, UK, and Canada, regulations require either banning certain additives outright or mandating warning labels (e.g., "may have an adverse effect on activity and attention in children" for certain synthetic dyes).
Rather than print warning labels, most manufacturers reformulate the product for international markets — using natural colorants like paprika extract, beetroot concentrate, or spirulina instead of petroleum-derived synthetic dyes.
The US FDA has a different standard: it deems additives "Generally Recognized as Safe" (GRAS) based on older safety data, while EFSA (the European Food Safety Authority) applies stricter precautionary principles and requires manufacturers to prove safety rather than assume it.
UK McDonald's responded to consumer pressure and the British Vegetarian Society's requirements by removing beef flavoring from UK fries, making them vegetarian-certified. Dimethylpolysiloxane is permitted in EU frying oils (E900) at up to 10mg/kg but UK McDonald's does not use it. Japan has prohibited dimethylpolysiloxane in foods, banning it from McDonald's Japanese operations.
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