Low FODMAP Mexican Food: How to Eat Tacos Burritos and Enchiladas with IBS
Low FODMAP Mexican Food: How to Eat Tacos, Burritos, and Enchiladas with IBS
By Dr. Onikepe Adegbola, MD PhD — Johns Hopkins-trained physician-scientist and founder of Casa de Sante
Key Takeaways
- Mexican food is more IBS-friendly than most cuisines — the base ingredients (corn, rice, grilled meats, lime) are naturally low FODMAP
- The main traps: beans (GOS), raw onion, garlic in salsas, and large portions of sour cream/cheese
- Corn tortillas are always low FODMAP. Flour tortillas contain wheat (moderate fructan) — stick to corn when possible.
- Home-cooked Mexican food is extremely easy to make IBS-safe with simple substitutions
Safe Ingredients
Always Safe
- ✅ Corn tortillas: 100% corn masa. Zero FODMAP. The foundation of authentic Mexican food.
- ✅ Rice: White and Mexican (tomato) rice. Zero FODMAP base. Ensure the seasoning does not contain garlic/onion — add garlic-infused oil instead.
- ✅ Grilled chicken: Simple seasoning: cumin, paprika, chili powder, salt, lime juice. All safe.
- ✅ Grilled steak (carne asada): Marinated in lime juice, cumin, chili. Safe spices.
- ✅ Carnitas: Slow-cooked pork with orange, cumin, oregano. Naturally FODMAP-friendly.
- ✅ Lime: Unlimited. Squeeze on everything.
- ✅ Cilantro: Safe herb, unlimited quantity.
- ✅ Bell peppers: All colors. Safe.
- ✅ Tomatoes: Fresh or canned. Safe at normal serving sizes (1 small tomato).
- ✅ Cheddar/Monterey Jack: Aged cheeses = low lactose. Safe.
- ✅ Hot sauce (most): Tabasco, Cholula (check label for garlic), Frank's — usually vinegar/pepper/salt.
Avoid or Limit
- ❌ Beans (black, pinto, refried): High GOS. The biggest Mexican food FODMAP trap.
- ❌ Raw onion: Found in pico de gallo, on top of tacos, and in most salsas.
- ❌ Garlic: In salsas, marinades, rice seasoning, and refried beans.
- ⚠️ Avocado/guacamole: 1/8 avocado = low FODMAP. A full serving of guac typically exceeds this.
- ⚠️ Flour tortillas: Wheat-based. Moderate fructan. 1 tortilla may be tolerated; 2+ may not.
- ⚠️ Sour cream: Moderate lactose. Small amount usually fine. Large portion may trigger symptoms.
Restaurant Ordering
Best Orders
- ✅ Street tacos: Corn tortillas + grilled meat + cilantro + lime. Request no onion. The simplest and safest order.
- ✅ Burrito bowl (no tortilla): Rice + meat + lettuce + cheese + salsa (request mild/pico on the side, use sparingly). Skip beans.
- ✅ Fajitas (modified): Grilled meat + bell peppers (request no onion). Corn tortillas. Cheese. Lettuce. Lime.
- ✅ Quesadilla: Corn or flour tortilla + cheese + chicken. Simple and usually safe.
- ⚠️ Enchiladas: Corn tortillas are safe, but most enchilada sauces contain garlic and onion. Red chile sauce (made from dried chiles, not garlic) is safer than green (tomatillo with garlic/onion).
Home-Cooked Low FODMAP Tacos
Easy Chicken Tacos
Season 1.5 lbs chicken breast with 1 tbsp cumin, 1 tsp paprika, 1 tsp chili powder, salt, pepper, juice of 2 limes, 2 tbsp garlic-infused olive oil. Grill or pan-sear 6-7 minutes per side. Slice thin. Serve in warmed corn tortillas with shredded lettuce, diced tomato, cheddar cheese, cilantro, lime wedges, and hot sauce.
Carne Asada
Marinate 2 lbs flank steak in: juice of 4 limes + 2 tbsp garlic-infused olive oil + 1 tbsp cumin + 1 tsp oregano + salt + pepper. Refrigerate 2+ hours. Grill over high heat 4-5 minutes per side (medium-rare). Rest 10 minutes. Slice against the grain.
🛒 Taco Night Essentials
Casa de Sante Digestive Enzymes — Take before taco night, whether home-cooked or restaurant. Alpha-galactosidase handles any bean exposure. Comprehensive enzyme blend manages the rich, multi-component nature of Mexican meals.
Medical Disclaimer: This article is for educational purposes only. Restaurant recipes vary. Dr. Adegbola is the founder of Casa de Sante.
