BAKERY STYLE BUN-Ingredients: Enriched Flour (Bleached Wheat Flour, Malted Barley Flour, Niacin, Reduced Iron, Thiamin Mononitrate, Riboflavin, Folic Acid), Water, Whole WheatFlour, High Fructose Corn Syrup, Honey, Wheat Gluten, Contains 2% or Less of: Yeast, Soybean Oil, Maltodextrin (Dietary Fiber), Salt, Calcium Sulfate, DoughConditioners (Wheat Flour, DATEM, Ascorbic Acid, Azodicarbonamide, Sodium Stearoyl Lactylate, Mono and Diglycerides, Enzymes, Calcium Peroxide), AmmoniumSulfate, Natural Flavor (Botanical Source), Calcium Propionate (Preservative), Vitamin D3, Rolled Wheat (Topping).CONTAINS: WHEAT., GRILLED CHICKEN FILLET-Ingredients: Chicken Breast Fillet with Rib Meat, Water, Seasoning (Rice Starch, Salt, Sugar, Yeast Extract, Canola Oil, Onion Powder, Maltodextrin, Chicken Skin,Paprika, Flavor, Sunflower Oil, Chicken, Garlic Powder, Chicken Fat, Spices), Sodium Phosphates, TOMATO SLICE-Ingredients: ICE-Chicken & Fish, THICK CUT APPLEWOOD SMOKED BACON-Ingredients: Pork Bellies Cured with Water, Salt, Sugar, Natural Smoke Flavor (Plant Source), Sodium Phosphate, Sodium Erythorbate, Sodium Nitrite., SWISS CHEESE-Ingredients: Swiss Cheese (Pasteurized Milk, Cheese Culture, Salt, Enzymes), Natamycin (Natural Mold Inhibitor).CONTAINS: MILK., MAYONNAISE DRESSING-Ingredients: Water, Soybean Oil, Distilled Vinegar, Maltodextrin, Modified Food Starch, Enzyme Modified Egg Yolk, Salt, Sugar, Xanthan Gum, Mustard Flour,Potassium Sorbate (Preservative), Lemon Juice Concentrate, Polysorbate 80, Natural Flavor (Animal Source), Calcium Disodium EDTA to Protect Flavor, BetaCarotene (Color).CONTAINS: EGG-Ingredients: USDA Grade A Eggs.CONTAINS: EGG.Prepared with Liquid Margarine: Liquid Soybean Oil and Hydrogenated Cottonseed and Soybean Oils, Water, Partially Hydrogenated Soybean Oil, Salt, Soy Lecithin,Mono and Diglycerides, Sodium Benzoate and Potassium Sorbate (Preservatives), Artificial Flavor, Citric Acid, Vitamin A Palmitate, Beta Carotene (Color).CONTAINS: SOY LECITHIN..,LEAF LETTUCE Source : http://nutrition.mcdonalds.com/getnutrition/ingredientslist.pdf