Gut Feeling: Understanding the Mechanisms Underlying the Antidepressant Properties of Probiotics

"The intervention in this study is a multi-strain probiotic which contains:~Bacillus subtilis, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium infantis, Bifidobacterium longum, Lactobacillus acidophilus, Lactobacillus delbrueckii ssp. bulgaricus, Lactobacillus casei, Lactobacillus plantarum, Lactobacillus rhamnosus, Lactobacillus helveticus, Lactobacillus salivarius, Lactococcus lactis ssp. lactis, Streptococcus thermophilus.~Each capsule contains minimum 2 billion live microorganisms per capsule, equivalent to 10 billion live microorganisms per gram."

Visually identical capsules in identical packaging containing no active bacteria.