Look for Active Cultures and Probiotics
To make sure your yogurt contains active cultures, check the label. Most brands will have a graphic that says ''live and active cultures.''
If you want to know which specific active cultures your yogurt contains, look to the label again. Under the list of ingredients, many brands list the specific active cultures. For Activia by Dannon, for example, L.Bulgaricus, S.Thermophilus, and bifidobacterium are listed. This particular yogurt contains the probiotic culture bifidus regularis, which works to regulate your digestive system. So if constipation is your challenge, this might be the probiotic for you.