Image by Colton Sturgeon

Mental and

Neural Health

Psychobiotic Lactobacillus plantarum PS128™ 

  • Isolated from fermented mustard greens

  • Benefits proven through multiple clinical studies

  • Probiotic Product of the Year Winner at the 2018 NutraIngredients-Asia Awards

  • 30 million+ doses sold

  • Self-affirmed GRAS (generally recognized as safe) status


Health functions

  • Modulates brain dopamine and serotonin levels

  • Reduces cortisol levels throughout the body

  • Boosts amounts of key short-chain fatty acids (SCFAs)

  • Promotes a healthy gut microbiome

Clinical findings

We are committed to understanding the function of psychobiotics through scientific research. The following mental and neurological health benefits have been demonstrated through clinical studies using PS128:

How it works

The microbes within our gut, along with the two-way connection between our enteric and central nervous systems, are referred to as our microbiota-gut-brain axis. Probiotics interact with other microbes, neurons, endocrine cells, and various immune receptors in the gut to elicit a variety of benefits to our health.


PS128’s unique mechanism of action regulates the concentration of molecules such as neurotransmitters dopamine and serotonin and stress hormone cortisol. When these are imbalanced, symptoms and disorders that may result can be ameliorated by taking PS128.