Propionibacterium freudenreichii shermanii

Why You Need It

• Vitamin B12 Production: This strain is one of the few bacteria capable of synthesizing bioactive Vitamin B12, which is essential for nerve function and red blood cell formation.
• Gut Barrier Support: It produces propionic acid, which feeds the cells lining your colon, strengthening the gut barrier.
• Metabolic Health: Emerging research suggests propionic acid may help improve insulin sensitivity and regulate appetite.

Deep Dive

Unlike standard yogurt cultures (Lactobacillus), P. freudenreichii is a unique probiotic. Its primary benefit lies in its metabolites. When it ferments food, it creates Vitamin B12 and Propionic Acid. Propionic acid is fascinating because it acts as a fuel source for your colon cells (colonocytes) and has been shown to reduce cholesterol synthesis in lab studies. By taking this probiotic, you are essentially introducing a natural 'vitamin factory' into your gut, potentially boosting your B12 levels naturally while reinforcing your digestive defenses.

Natural Food Sources

This specific bacteria is not found in fruits or vegetables. It is a bacterial culture used in the fermentation process. Therefore, the 'source' is the fermented food itself. Eating these foods introduces the live bacteria into your system.

Supplementation

Since this bacteria is anaerobic (hates oxygen), it is difficult to keep alive in standard capsules. Look for micro-encapsulated or spore-forming probiotic supplements specifically listing P. freudenreichii on the label.

• Dosage: Clinical studies typically use 1 billion to 10 billion CFUs daily.
• Who should take it: Ideal for vegetarians/vegans looking to optimize natural B12 synthesis, or those with sluggish digestion seeking gut lining support.