Quarter Pounder With Cheese: Allergens at a Glance
The honest verdict
Quarter Pounder With Cheese · McDonald's
The Quarter Pounder With Cheese is a McDonald's burger built on a wheat bun with a quarter-pound beef patty, one slice of American cheese, pickles, onions, ketchup, and mustard. The allergen profile is dominated by wheat from the bun, milk from the cheese, and egg from the mayonnaise (added by default in many regions). The bun is typically sesame-seeded, introducing a sesame may_contain status. The beef patty itself is allergen-minimal. Cross-contact via shared grills and prep surfaces is possible. Always confirm with your specific McDonald's location before ordering.
Allergen details change and vary by location. This is a general guide — always confirm with the restaurant before ordering. Not official or medical advice.
Key facts
The Quarter Pounder beef patty is 100% beef with salt and pepper — no added allergens in the patty itself.
McDonald's buns in the US are typically sesame-seeded, making sesame a visible ingredient on the Quarter Pounder.
Mayonnaise on McDonald's burgers contains egg, making the Quarter Pounder With Cheese a direct source of egg allergen unless ordered without mayo.
Every major allergen, one clear grid
Each of the nine major allergens marked for Quarter Pounder With Cheese at McDonald's — Contains, May contain (cross-contact or varies), or Free. Anything we couldn't confirm defaults to "may contain," because a shared kitchen can't be ruled out without the restaurant's official menu.
- MilkContains
The slice of American cheese on the Quarter Pounder is a direct source of milk protein. Removing the cheese eliminates this allergen from the burger.
- EggContains
Mayonnaise is a standard component of the Quarter Pounder With Cheese in most regions and contains egg. Ordering without mayo removes this allergen.
- Wheat / GlutenContains
The bun is wheat-based. There is no standard gluten-free bun option at McDonald's. The bun is the primary source of wheat in this item.
- SoyMay contain
Soy appears in refined soybean oil used in the mayonnaise and potentially in the grill seasoning or bun. Highly refined soy oil is FDA-exempt from allergen labeling and tolerated by most with soy allergy. Those with severe soy sensitivity should confirm.
- PeanutFree
Peanut is not an ingredient in the Quarter Pounder With Cheese. Peanut oil is not used in McDonald's burger preparation. Cross-contact is very unlikely.
- Tree NutFree
Tree nuts are not an ingredient in the beef patty, bun, cheese, or standard condiments. Not a concern for this menu item.
- FishFree
Fish is not an ingredient in the Quarter Pounder With Cheese. The Filet-O-Fish is a separate menu item with its own fryer — cross-contact is not typical for the burger grill.
- ShellfishFree
Shellfish is not an ingredient in any component of this burger. Not a concern for this menu item.
- SesameMay contain
The Quarter Pounder bun is typically a sesame seed bun at McDonald's locations. Sesame seeds are visible on the bun top. Some locations may use a plain bun — confirm with your restaurant. Sesame is also present in some regional bun recipes.
“May contain” means cross-contact is possible or the answer varies by location — not that the allergen is a listed ingredient. For a severe allergy, treat “may contain” the same as “contains” until the restaurant confirms otherwise.
Small changes that remove an allergen
Simple modifications that can take an allergen off your quarter pounder with cheese. Always name your allergy when you order and ask staff to confirm — a modification only helps if the kitchen prepares it separately.
Order without cheese
Order without mayonnaise
Request a bunless option (lettuce wrap or served in a container)
Ask for a plain bun (no sesame seeds) if available
A modification lowers exposure but doesn't erase cross-contact from shared fryers, grills, or prep surfaces. For a severe allergy, confirm the prep with a manager before you eat.
Read this before you order
Cross-contact & severe allergies
A “free of” mark on the grid above means the allergen isn't an ingredient — it doesn't mean the item was made in an allergen-free kitchen. Two things matter most:
Shared fryers & equipment
McDonald's grills are shared across all burger patties. While the Quarter Pounder patty itself is allergen-simple, the grill surface may have residue from previous items containing milk (cheese from other burgers) or wheat (bun crumbs). Prep surfaces and utensils used for condiments can also introduce trace allergens. Cross-contact risk is moderate but real for severe allergies.
If your allergy is severe
For anaphylactic allergy to wheat, milk, egg, or sesame, the Quarter Pounder With Cheese is not guaranteed safe without restaurant-level confirmation. The bun, cheese, and mayonnaise are fixed components — removing them changes the item fundamentally. Carry your epinephrine auto-injector. If you cannot confirm preparation details, consider a different menu item with fewer allergen risks.
This guidance is general and can't account for how any single location prepares your food. The restaurant's staff and official allergen menu are the final word — when in doubt, ask, or choose something else.
❓Frequently Asked Questions
Yes. The bun is wheat-based and contains gluten. There is no gluten-free bun option at McDonald's. Removing the bun entirely (ordering a bunless burger) eliminates the gluten source, but cross-contact from shared grills and prep surfaces may still be a concern for those with celiac disease or severe gluten sensitivity.
The quarter-pound beef patty at McDonald's is made from 100% beef with salt and pepper — no fillers, no binders, no added allergens. The patty alone is free of the Big-9 allergens. All allergen risk comes from the bun, cheese slice, and condiments added to the burger.
In most McDonald's locations, the Quarter Pounder bun is a sesame seed bun. This means sesame is present as a visible ingredient on the bun top. Some locations may offer a plain bun without sesame seeds — ask your specific restaurant. The sesame status is may_contain because bun recipes vary by region and supplier.
Yes. Ordering a Quarter Pounder without cheese removes the milk allergen from the burger. The item becomes a standard Quarter Pounder (no cheese). Note that the mayonnaise (egg) and bun (wheat, sesame) remain unless separately modified.
Yes, mayonnaise is a standard component of the Quarter Pounder With Cheese in most regions. It contains egg. Some locations may use a different sauce or omit it by default — check with your restaurant. You can always request the burger without mayo to remove the egg allergen.
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Read moreFind out which foods you actually react to
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Please verify before ordering
Allergen info changes and varies by location
Recipes, suppliers, and preparation methods change often and differ between locations, so the details here can go out of date or not match your specific McDonald's restaurant. Always confirm directly with the restaurant and check its official allergen menu before ordering. This page is a general research summary — it is not official information from McDonald's, and it is not medical advice. If you have a food allergy, decisions about what is safe to eat should be made with the restaurant and, where relevant, your healthcare provider.