Yes, pizza commonly contains major allergens, mostly milk in the cheese and wheat in the crust, and sometimes soy, eggs, tree nuts, peanuts, fish, shellfish or sesame. Read the label or ingredient list, ask the kitchen about cross-contact, and carry epinephrine if you have ever had anaphylaxis. We are open until 3 AM, 365 days a year, so you can call and ask any time.
TL;DR:
- Milk and wheat are common pizza allergens; cheese and crust are obvious sources, while pesto, dressings, sauces, and garnishes may hide nuts, eggs, fish, or sesame.
- The FDA added sesame to its major allergen list on January 1, 2023, but older packaged products may not identify it, so ask when labels look old.
- Oven heat does not remove allergen risk; shared cutters, prep surfaces, topping bins, and fryers can transfer proteins, so request washed surfaces and clean tools.
- Call ahead, name your allergen, ask whether equipment is shared, and request a manager, clean tools, and a washed prep surface.
- Reactions can begin within minutes to two hours; carry epinephrine for known severe allergies, use it at serious symptoms, and call emergency services afterward.
Table of Contents
- The nine major allergens and how they show up on pizza
- Where allergens hide on a pizza
- Cross-contact: how allergens move around a pizzeria
- How to check labels and confirm a dish with the restaurant
- Symptoms, timing and when to get emergency help
- Our perspective: how we handle dietary requests
- Our take: a label tells you less than a conversation does
- Order direct from Zio Al's and add your allergy note
- FAQ
- Sources
The nine major allergens and how they show up on pizza
The FDA recognizes nine major food allergens in the United States, and they account for more than 90% of food-allergic reactions. Sesame joined the list on January 1, 2023, under the FASTER Act. Here is where each one tends to turn up on a pizza:
- Milk: the cheese, plus butter or milk powder in some doughs.
- Wheat: the crust, and any breaded or battered topping.
- Soybeans: soybean oil or dough conditioners in the crust, and some processed toppings.
- Eggs: some doughs, glazes and creamy dressings or dips.
- Tree nuts: pesto and nut-based garnishes.
- Peanuts: uncommon on pizza, but possible in certain sauces, oils or through shared equipment.
- Fish: anchovies, and some sauces flavored with fish.
- Crustacean shellfish: shrimp or crab on specialty pies.
- Sesame: seeds on the crust edge, or sesame oil in a sauce.
Sesame matters most when you read a package. Products packaged on or after the 2023 date must list it, but older stock may not show it yet. If a label looks old, ask.
Where allergens hide on a pizza
Most people check the cheese and stop. The harder sources sit in the layers you can't see.
- Crust: wheat is the base. Some doughs also carry soy or dairy, and some crust glazes use egg or milk.
- Cheese: every cheese contains milk proteins. Processed blends and cheese sauces may add other dairy ingredients.
- Sauces and dressings: pesto often has tree nuts. Ranch-style drizzles can contain egg or milk, and some specialty sauces use fish or shellfish for flavor.
- Toppings and finishes: sesame seeds, anchovies and nut garnishes are easy to miss. Shared topping bowls can pass traces from one pie to the next.
Making your own is one way to control every ingredient. This tested guide to allergy-friendly pizza doughs is a useful starting point. If nuts are your concern, these nut-free meal ideas offer safe swaps for toppings.
Cross-contact: how allergens move around a pizzeria
Cross-contact means an allergen transfers from one food to another, usually through hands, tools or surfaces. Cooking does not fix it. Allergens are typically proteins, and they can remain allergenic after cooking. Even trace amounts can set off a reaction, and for peanut allergy that includes very small exposures.
Common ways it happens in a pizza kitchen:
- Shared cutters, peels and serving tools.
- Cutting boards and prep surfaces that are wiped, not washed.
- Shared oil or fryers, which matters if you add wings or sides.
- Reused toppings returned to a shared bin.
- Flour and dough dust in the air near the prep line.
Ask the kitchen to use clean tools and a washed surface. Soap and water between orders is the standard to ask for.
Pro Tip: Order early in the service. Staff are less rushed, prep areas are cleanest, and a manager has time to give you full attention.
How to check labels and confirm a dish with the restaurant
For packaged items, look for the "Contains" statement and any allergen notes inside the ingredient list. Check every time, since recipes change. Remember the sesame transition above, and know that manufacturers are responsible for declaring allergens and preventing cross-contact.
When you call or message a restaurant, three short questions cover most of it:
- Does this item contain [your allergen]?
- Is it prepared on shared equipment or surfaces?
- Can you use clean tools and a washed prep area for my order?
Other steps from FoodAllergy.org's dining-out guidance are worth following: ask to speak with the chef or manager, have a backup menu choice, and give specific instructions. Simple pies with fewer toppings and no garnish leave fewer places for a surprise. Add your allergy note directly to the order.
Pro Tip: Save your three questions as a note on your phone so you ask the same thing every time.
Symptoms, timing and when to get emergency help
Reactions usually start within minutes to two hours of eating. Watch for hives, itching, flushing, swelling of the lips or tongue, belly pain, vomiting, trouble breathing or dizziness.
Anaphylaxis is the most severe form of food allergy and calls for immediate epinephrine, an intramuscular injection followed by emergency care.
If you have a known severe allergy, carry your autoinjector everywhere and use it at the first signs of a serious reaction. Call emergency services even if you feel better afterward. If you react after a pizza and don't know why, see a physician. A detailed history of the reaction is the most important tool for working out the cause.
Our perspective: how we handle dietary requests
We are open until 3 AM, 365 days a year, and we make our dough fresh in-house every day. Our whole menu is pork-free, and we prepare Zabiha halal upon request. For anything involving allergies, call ahead, put your allergy in the notes on zioals.com or in the Zio Al's app, and ask for a cleaned prep surface and clean utensils. We do our best to accommodate you, but for severe allergies please speak with our manager or chef directly, and keep your epinephrine with you.
Our take: a label tells you less than a conversation does
Allergen lists are a good start, but they are not the safest part of the process. The nine-allergen list tells you what to look for. It cannot tell you what happens at the prep table during a busy service. Most advice stops at "read the label," and that falls short for restaurant food, where much of the risk comes from tools, surfaces and timing.
Put the conversation first. Name your allergen plainly, ask how the pie will be made, and order in a quiet window if you can. If an answer is vague, treat it as a no. A short, confident answer is worth more than a menu icon. Then keep your medication close, because no kitchen can promise zero risk.
— Zio Al's Team
Order direct from Zio Al's and add your allergy note
When you order from us directly, you can add a note to your order.
- Fresh dough made in-house daily and a pork-free menu.
- Zabiha halal upon request.
- 15% off your first order in the Zio Al's app.
Zioals or call ahead, and see our FAQs for ordering details. We are an option, not a medical guarantee. If your allergy is severe, confirm with our staff and carry your epinephrine autoinjector.
This article is general information, not a substitute for advice from a qualified doctor. Consult a qualified healthcare professional about your own circumstances before acting on anything here.
FAQ
What are the 14 allergens?
That list is the one used in the UK and EU. In the United States, the FDA recognizes nine major food allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame. The extra items in the longer list include celery, mustard and lupin.
Why am I so itchy after eating pizza?
Itching can be an early sign of a food allergy, along with hives or flushing, and it often begins within minutes to two hours of eating. Common triggers in pizza include milk, wheat, soy and sesame. See a physician to find the cause, and get emergency care if you have swelling or trouble breathing.
Can I eat pizza if I have a peanut allergy?
Peanuts are rarely a pizza ingredient, but cross-contact on shared equipment is the concern. Experts advise calling ahead and asking the chef about kitchen practices before you order.
Can cooking remove allergens from pizza?
No. Allergens are usually proteins that can stay allergenic after cooking, so a hot oven does not make a pizza safe for you.