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 mild symptoms:

  • Remission rate, as measured by both the absence of COVID-19 symptoms and a negative RT-PCR test

  • Reduction in the number of symptomatic patients with COVID-19

  • Reduction in the duration of specific symptoms

  • Reduced viral load in nasopharyngeal swabs

  • Increased specific IgG and IgM levels against SARS-CoV-2

The study is currently awaiting peer review.

The strain is complemented with 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.