There is much more about the I-MATH and I-MASK protocols at the FLCCC's site. Some of their videos have been censored by the "experts" at Youtube and elsewhere. In contrast the FLCCC's group has a combined roughly 2000 published papers. Ivermectin is likely the medication they were referring to , but the FLCCC uses a steroid, vitamin C, and more for their hospitalized patients.

https://covid19criticalcare.com/

This is a map of the states where you can get HCQ. It looks more political than scientific. The places where you can't get it seem to be run by Democrat governors who apparently are quite confident in their ability to understand medical research.
https://www.americasfrontlinedoctors.com/hcq/