Andrographis Paniculata has been extensively used as traditional medicine in India, China and Southeast Asia.
 
Also known as the "King of Bitters". The bitter tonic gives a clue as to its action on the gut and enhancement of liver health. Very useful for a disturbed gut and where bacterial overgrowth or presence of other pathogens are suspected.
 
You can read here how the chemistry of the bitter herbs and the digestive tract are a match made in heaven.
 
Immunity enhancing, Antimicrobial. Key for gut infections and upper respiratory infections. Aids digestion. Endotoxins as a source of systemic inflammation
 
Experimental and Clinical Pharmacology of Andrographis paniculata and Its Major Bioactive Phytoconstituent Andrographolide (nih.gov)
 
More research
 
Andrograpanin mitigates lipopolysaccharides induced endometritis via TLR4/NF-κB pathway – ScienceDirect
 
Andrographis Paniculata Extract (HMPL-004) for Active Ulcerative Colitis (nih.gov)
 
Andrographolide as a potent and promising antiviral agent – PubMed (nih.gov)