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Immune Support is a high quality good bacteria supplement with 5 billion Lactobacillus paracasei CASEI 431 as well as added Vitamin C. Great for anyone wanting to support the immune system and resistance to infection.


A supplement with added Vitamin C designed for those wishing to support their immune system. This strain has been extensively researched in thousands of people and is recommended for daily use, especially in the winter months. It is suitable for those aged 4 years onwards.

Digestive supplement 
Optibac Immune Support contains 5 billion live cultures of the strain L. paracasei CASEI 431®, which complements the natural gut bacteria
Extensively researched 
L. paracasei CASEI 431® has been studied in over 20 clinical trials 
With Vitamin C for immune function 
With 80mg of Vitamin C per capsule, to help maintain normal function of the immune system, contribute to our resistance to infection, and reduce tiredness and fatigue
Scientifically proven 
High quality friendly bacteria shown to survive stomach acidity and reach the gut alive, where over 70% of the body’s immune cells reside
Specific strain action 
L. paracasei CASEI 431® has been shown to stimulate immune system responses and increase immune cell activity
For daily use 
High-quality, daily immune support in just one easy-to-swallow capsule
Natural and vegan 
Vegan, dairy free and gluten free, with absolutely no artificial flavourings or colourings

Optibac Immune Support x 30 capsules

  • Vitamin C (80mg, 100% NRV*); stabiliser: maltodextrin (natural source); vegetarian capsule: hydroxypropyl methylcellulose; Live cultures: Lactobacillus paracasei CASEI 431®; anti-caking agent: vegetable magnesium stearate.

    Each capsule guarantees 5 billion micro-organisms.

    *Nutrient Reference Value.

  • Vegan
    No dairy
    Gluten free
    No added sugars
    Yeast free
    Free from artificial flavourings, colourings and preservatives
    No chemicals or parabens
    GMO free
    Suitable during pregnancy
    Suitable during breastfeeding
    Following the taxonomic updates published in April 2020 which are intended to be adopted globally, this strain may now also be referred to as Lacticaseibacillus paracasei subsp. paracasei CASEI-431.

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