Allergens in pad thai: ingredients, variations and how to order safely
By the Menulta editorial team · Facts checked 15 October 2026 · Updated 15 October 2026
The short answer
Pad thai usually contains peanuts (crushed on top and sometimes in the sauce), egg (scrambled into the noodles), fish (fish sauce) and crustaceans (dried shrimp or prawns). Many restaurant versions add soy sauce or oyster sauce, which bring soy, gluten and molluscs. The rice noodles themselves are gluten-free.
What pad thai is
Pad thai is a stir-fried rice noodle dish with a sweet, sour and salty sauce made from tamarind, palm sugar and fish sauce. It is cooked quickly in a wok with egg, tofu or meat, bean sprouts and spring onions, and finished with crushed peanuts and lime.
Traditional pad thai ingredients and their allergens
| Ingredient | Allergen | Note |
|---|---|---|
| Rice noodles | None | Naturally gluten-free |
| Egg | Egg | Scrambled into the noodles |
| Fish sauce | Fish | |
| Dried shrimp or prawns | Crustaceans | |
| Peanuts | Peanuts | Crushed garnish, sometimes in sauce |
| Tofu | Soy | Common in vegetarian and traditional versions |
| Soy sauce or oyster sauce (some versions) | Soy, gluten, molluscs | Restaurant variations |
Variations that change the allergens
Chicken, prawn and tofu pad thai differ mainly in protein. Vegetarian pad thai should omit fish sauce and dried shrimp, but many restaurants keep them. Some pre-made pad thai sauces contain soy, wheat or peanut.
Restaurant and bought-in versions
Many restaurants use a bought-in pad thai sauce. Check its label for fish, soy, wheat and peanut. Woks are shared, so peanut and shellfish traces are likely.
Street-food and takeaway pad thai is often cooked in seconds in a wok used for every order, with peanuts, egg and shrimp close at hand. Even if you ask for no peanuts, traces are likely. Guests with severe peanut or shellfish allergies should discuss cross-contact before ordering.
Pad thai allergen by allergen
| Allergy | What to know |
|---|---|
| Peanuts | Ask for no peanuts, but check the sauce and shared wok. |
| Egg | Can often be left out. |
| Fish, crustaceans | Hard to avoid; needs a sauce without fish sauce or shrimp. |
| Gluten / coeliac | Possible with gluten-free sauces and a cleaned wok. |
| Soy | Present if tofu or soy sauce is used. |
Ordering it with an allergy
Ask whether the sauce contains fish sauce, soy sauce or peanuts, whether dried shrimp is added, and whether the wok can be cleaned. Ask for the peanuts and egg to be left out if needed.
Sources
This guide is general information, not medical or legal advice. Guests with an allergy should follow their doctor's advice. Operators should confirm their own setup with their food safety adviser or local authority.