About Blis

Introducing the BLIS Probiotics range of advanced ORAL probiotic strains that support a healthy mouth and throat

Probiotics (pro=for, bios = life) are beneficial live bacteria that when taken in adequate amounts, confer a health benefit (World Health Organisation).

Most people think of their gut when they think of probiotics, however oral probiotics also play an important role in overall health. BLIS K12® and BLIS M18® are the world’s first advanced oral probiotics developed to specifically support the health of the oral cavity including throat, ENT, teeth and gums.

Streptococcus salivarius K12 (BLIS K12) and Streptococcus salivarius M18 (BLIS M18) were discovered by our scientific founder Professor Emeritus John Tagg.  John developed rheumatic fever as a young man due to untreated strep throat.  This had a profound effect on his life. You can read more about John's story here.

After suffering 10 years of antibiotic use (still the regimen today for anyone who has had rheumatic fever), he spent his life searching for a ‘good’ bacteria that could prevent someone else having to go through the same experience. 

Both BLIS K12 and BLIS M18 are commensal to a healthy human oral cavity which means they colonise well; we are not trying to introduce a foreign entity into the mouth.  Most humans do not naturally have high enough amounts of BLIS K12 or BLIS M18 to give us their protective benefits, so supplementation is a great way to add these amazing bacteria into the body.

BLIS K12 is clinically proven to work against the bacteria that cause Group A Strep; Streptococcus pyogenes in particular, as well as a number of other bacteria that can cause upper respiratory tract issues and otitis media (middle ear infections) in children.  BLIS K12 is also active against the bacteria on the tongue that cause bad breath.

BLIS M18 fights the bacteria that cause tooth decay and gum disease including Streptococcus mutans and P. gingivalis.

Both strains work in 2 ways:

  1. They colonise and crowd out the pathogenic bacteria (we call it competitive exclusion)
  2. They produce anti-microbial peptides that ‘seek and destroy’ the pathogenic bacteria. These peptides are called ‘Bacteriocin Like Inhibitory Substances’ or BLIS for short