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Ingredients

Lactococcus lactis

Probiotic

Nuzest ingredients - Lactococcus lactis

Lactococcus lactis is a bacterium used in the fermentation of dairy products such as cheese and buttermilk. It is also included in probiotic blends.

Found in: Dairy products, fermented vegetables, meat

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/ Last updated: August 28, 2025

Lactococcus lactis and Immunity

Lactococcus lactis supports immune function by activating key immune cells in the gut, such as plasmacytoid dendritic cells, which enhance the body’s antiviral response through increased interferon (antiviral signalling protein) production. It also helps regulate inflammation and supports mucosal immunity, making it beneficial for both systemic and gut-associated immune defences.

The Anti-Inflammatory Properties of Lactococcus lactis

By decreasing pro-inflammatory molecules like IL-8 and promoting repair of the intestinal lining, Lactococcus lactis may help reduce gut inflammation and alleviate digestive discomfort. It also supports immune balance by enhancing anti-inflammatory signalling and activating cells that maintain gut health and immune homeostasis.¹

Lactococcus lactis and Mental Health

Lactococcus lactis may also influence the gut–brain axis by promoting a balanced gut microbiome and increasing the production of mood-related compounds, including serotonin precursors. By reducing inflammation originating in the gut and supporting neurotransmitter regulation, it may help mitigate cognitive and emotional changes associated with stress.²

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