General advice about what can trigger diarrhea in some people. You may or may not be triggered by this stuff, and it depends on what tends to set you off at home.1. Fatty/Greasy/Rich/Fried foods. Avoid deep fat fried/crispy foods or fatty sauces like alfredo or other cream sauces and butter sauces and gravies. Restaurant meals tend to have more fat in them than if you cooked it at home, so try to stick to the leaner parts of the menu and things you usually tolerate well. So if you do well with chicken but not steak, order the chicken.2. Salads. Many IBSers don't do raw veggies that well, and the dressings and toppings tend to be as fatty as possible to make it taste better so that doesn't help. Some places put some preservatives on the lettuce that can bother some people.3. If you don't generally do well with starchy meals don't do the pasta or other high carb meals. The portion sizes tend to be pretty large and that can really set people off. You might be OK with 1/2 cup of pasta, but not the 4-5 cups they use for a dinner serving.4. Raw fruits and juices. You may want to avoid raw apples, pears, peaches, cherries, apricots, and plums. If they cook them they are OK. The juice and the fruits have sorbitol which can increase diarrhea for some. If they cook them, it is OK (so applesauce with the pork chop should be OK) but you get a large glass of juice and that can loosen up the stools of healthy people.Don't be afraid to ask for subsitutions. You can as them not to add fat to grilled items or if they will steam a side of veggies for you rather than whatever fatty side something comes with. You may want to order any salad dressings or sauces on the side.Another tip if larger meals tend to bother you is order the entree with a to go box to come out with it. If you put 1/2 the meal away (assuming you have a fridge somewhere) before you start you will eat less than if you have the whole thing sitting on the plate and try to eat only half of it. If they have a smaller portion of something (either as an appetizer or as an entree you can order in different sizes) go for the smaller portion.Many restaurants have menus and nutrition info online so you may want to check out where you are going ahead of time and see what they have and which meals are high fat/low fat that you didn't expect, etc.