REUTERS/Danilo Balderrama
The action came after Insider flagged the groups promoting chlorine dioxide.
Public health bodies have warned repeatedly against taking the substance.
Facebook has removed pages and groups associated with a controversial group of medics promoting chlorine dioxide, a type of toxic bleach, as a COVID-19 treatment, following an Insider investigation.
Insider found that a large network of groups associated with Comusav (Coalición Mundial Salud y Vida) were promoting the bleach on the platform to tens of thousands of followers in countries including Argentina, Bolivia, and Colombia.
The largest group was in Mexico with 45,000 members, Argentina's had more than 12,000 while others had smaller but still sizeable memberships often of several thousand members.