Supporting Your Immune Response

The collection of probiotic strains, termed AB21™ is the first clinically validated for the treatment of COVID-19.

A study including 300 non-hospitalized adult participants with PCR-confirmed COVID-19 and active symptoms but did not require hospitalisation:

  • Complete remission achieved by 78 of 147 (53.1%) in the probiotic group compared to 41 of 146 (28.1%) in the placebo group

  • Significant effect on the duration of symptoms from as early as 3 days after start of treatment

  • COVID-19 symptoms lasted 3.3 days less, on average, in the healthy bacteria supplement group than the placebo group

  • Significant reduction in viral load in the healthy bacteria supplement group compared to placebo, suggesting they may be less likely to suffer from long COVID-19

  • Boost to the acquired immune response to COVID-19.  Levels of two different types of antibodies were two-folds higher in the healthy bacteria supplement group compared to the placebo group, suggesting healthy bacteria supplement may benefit people being vaccinated

The study has recently been published in Gut Microbes.

The strain is complemented with vitamin D3, a more efficacious form of vitamin D.

Why Vitamin D?

Vitamin D is a fat-soluble vitamin that the body requires to function correctly. It has many roles in our body including regulating calcium and maintaining healthy bones and teeth. Vitamin D also helps support a healthy immune system.


AB21™ contains 4 patented probiotic strains that show a triple mechanism of action to fight against viral respiratory tract infections:

  • Lactobacillus plantarum KABPTM 033

  • Lactobacillus plantarum KABPTM 022

  • Lactobacillus plantarum KABPTM 023

  • Pediococcus acidilactici KABPTM 021

AB21 shortened median duration of COVID-19 symptoms from 18 days to 13 days.

Scientific Evidence

In a clinical trial, AB21™ reduced the mean duration of COVID-19 symptoms experienced and improved the immune response against the virus:

The Gut-Lung Axis

There is a communication between the microbiotas of the gut and lungs

All the microorganisms that are naturally found in and on the human body are called the microbiota. These include mostly  bacteria, viruses and fungi. The microbiota has been shown to have a vital role in health, including immunity

Viral Respiratory Tract Infections

Viral infections continue to cause considerable morbidity and mortality around the world.  Its risk has dramatically increased due to changes in human ecology such as global warming and an increased geographical movement of people and goods .

When fighting against pathogens,  a healthy immune system is one of the most important weapons that our human body owns.  A proper nutritional status is essential for the correct immune system function and the prevention and management of viral infections.