Bifidobacterium infantis (B. infantis) is a “friendly” strain of bacteria. It’s a type of lactic acid bacteria found in the same group as Lactobacillus. It’s naturally found in your oral cavity and gastrointestinal (GI) tract. It helps you maintain a healthy digestive tract.

Function:
1. Constipation.
Taking bifidobacteria can increase bowel movements by about 1.5 stools per week in people with constipation.
 
2. Helicobacter pylori (H. pylori) infection.
Taking bifidobacteria plus lactobacillus along with standard H. pylori therapy might help get rid of H. pylori infections about twice as well as taking standard H. pylori therapy alone. It can also reduce side effects such as diarrhea and bad taste from H. pylori therapy.
 
3. Irritable bowel syndrome (IBS).
Most research shows that taking bifidobacteria for 4-8 weeks can reduce IBS symptoms such as stomach pain, bloating, and difficulty having a bowel movement. It might also reduce symptoms such as anxiety and depression in people with IBS.
 
4. Airway infections.
Using probiotics containing bifidobacteria helps prevent airway infections such as the common cold in otherwise healthy people, including school-aged children and college students.
 
5. Diarrhea
Taking bifidobacteria helps prevent diarrhea when used with other probiotics such as lactobacillus or streptococcus.
 
6. Ulcerative colitis.
Research shows that taking probiotics containing bifidobacterium along with lactobacillus and streptococcus can help increase remission rate by almost 2-fold in people with active ulcerative colitis.