1st line of defense: bring my own food.
2nd: suggest going to a steakhouse, order known safe items
3rd: if I must go so far, vitamin E, aspirin, red light,.... and bag breathing--I don't know why but it makes me feel better. But vitamin E is it. If nothing else you gotta have vitamin E.
But I don't even get to #3 anymore. It's just not worth it to temporarily lobotomize myself and feel like shit for the rest of the day. And sleep horribly. For restaurant food that no longer even tastes good.