By Jessica Snyder Sachs
November 01, 2011

Foods, drinks, and supplements with probiotics are everywhere these days, but only some probiotic strains are proven remedies for common health issues.

You can find those strains in these products.

One capsule a day

$29.99 for a 1-month supply; select drugstores

Good Belly probiotic fruit drink

Irritable bowel

One (2.7-ounce) bottle a day

$4.49 for a 4-pack; select supermarkets and natural-products stores

Stonyfield organic yogurt


One cup a day

$1.99 for a 4-pack; supermarkets and natural-foods stores