Specific probiotic for viral respiratory tract infections

What is AB21®?

AB21® has been shown to reduce symptoms of viral infection, and can be used to potentiate immunity after vaccination

Speeds recovery from infection

Reduces duration of most common symptoms of viral respiratory tract, infection, including fever, cough, headache.

Boosts antibody production

Potentiates acquired immune response against viruses, specially SARS-CoV-2. Increases IgG and IgM counts in blood.

Reduces risk of virus transmission

Reduces viral load of nasal secretions, therefore reducing the risk of transmission.

Protects lung function

Reduces lung abnormalities in patients suffering from mild to moderate COVID-19.

AB21® composition

AB21® contains a mix of 4 specifically selected probiotic strains, that show a triple mechanism of action to fight against viral respiratory infections:

L. plantarum KABP™ 033


P. acidilactici KABP™ 021


L. plantarum KABP™ 022


L. plantarum KABP™ 023

Scientific evidence behind AB21®

In a clinical trial AB21® sped up the reduction of COVID-19 symptoms and improved the immune response against the virus:
AB21® allowed a quicker COVID-19 symptom recovery after 10 days of treatment:
AB21® reduced significantly duration of fever, cough, headache and other symptoms of viral infection: