I do both, actually, when I'm recovering from antibiotics or gastroenteritis. I've seen research that goes both ways as to which is better, pills or real yogurt. In general I'm with Di bear about eating food, but since you're trying to recover from a completely unnatural condition (antibiotics), enteric capsules and mega-doses make sense to me.

What doesn't really make sense to me is yogurt that's been "fortified" to make health claims...

If you do go for pills, make sure you get the kind that are stored in the store's refrigerator. Most of them say right on the label to take them as far between antibiotic doses as possible, and with a meal unless you're already taking the antibiotics with meals.