Here are the current recommendations from the
Independent Medical Alliance (formerly the FLCCC Alliance) website for Ivermectin...
Ivermectin: In the current situation of abundant natural immunity along with the recent circulation of less severe and more highly transmissible variants, chronic weekly or twice weekly ivermectin prophylaxis is no longer applicable to most people.
The following prophylaxis approaches with ivermectin can be considered and applied based on patient preference, comorbid status, immune status, and in discussion with their provider:
Twice weekly ivermectin at 0.2mg/kg; can be considered in those with significant comorbidity and lack of natural immunity or immunosuppressive states or those with long COVID or post-vaccine syndrome who are not already on ivermectin as treatment
Daily ivermectin just prior to and during periods of high possible exposure such as travel, weddings, conferences, etc.
Immediate initiation of daily ivermectin at treatment doses (0.4mg/kg) upon first symptoms of a viral syndromehttps://imahealth.org/ivermectin/The above page is extremely informative reading.
If you scroll down to
The History of Ivermectin, you will see a video of Dr. Pierre Kory when he testified in front of the US Senate in 2020. I watched the whole thing live that day. As I am reminded of that, I get angry all over again. Those guys worked hard and fast to explore the possibility of an existing, safe and inexpensive drug being effective against COVID-19, and they were sooooo exited to find one. They jeopardized the potential massive profits to be made by the pharmaceutical companies making new vaccines, and they were squashed like grapes by our corrupt agencies and people like Fauci while money changed hands throughout. All were full of crap at our expense. They would not allow a $3 cure (at that time) to undermine their corrupt business.
For the record, The IMA or FLCCC Alliance does not recommend substituting veterinary Ivermectin for a human prescription - That is merely the route chosen by many in the know in the veterinary (and broader medical) world to simply save lives if we were denied access by doctors. Besides, who would want to miss that wonderful apple flavor?

Rusty, I have not yet found an answer to your question about wiping out good gut flora. After being treated for years with antibiotics for tick bite diseases, I always take a good probiotic right before I go to bed at night. My Lyme doc always said not to take any antibiotics for at least two hours before bed so as not to kill the probiotics. I do not know about Ivermectin's role in killing good flora, only bad parasites. I'll let you know if I see anything.