A pill to fight dangerous gut infections has been approved by the FDA. The pill is made from healthy bacteria found in human waste. It is approved for adults 18 and older.

OpenBiome, the largest stool bank in the U.S., said it will keep serving patients who aren’t eligible for the FDA-approved products, such as children and adults with treatment-resistant cases.

Streptococci and other bacteria that tend to be reside in the mouth are, when found in gut flora, associated with coronary atherosclerosis and markers of systemic inflammation, according to a study of ...