Brazilian, here.
I didn't know about this tweet. Looking for it, I found an article that interviewed him [1].
The twitter doctor is the president of a respiratory disease association in Sao Paulo. He claims the young lady had a "drug-induced hepatitis" after taking 18mg of IVM daily for a week. "She is very close to need a transplant".
The doctor remarks the drug safety, "Ivermectin is a safe drug, it has been used over many years. The toxicity cases are rare.". Then disapproves the off-label prescription of IVM as treatment for covid given the lack of scientific evidence it works -- "so far".
He, then, explains the regular treatment schedule with IVM: one pill a day, once. Exceptionally, can be taken up to 3 days. And, again, criticizes people for taking it often.
He ends saying: "In summary: there is no early state treatment for covid that is scientifically proven to work so far. In mild cases, most people progress well (...) without taking any drugs".
The article also reproduces a statement from the drug manufacturer Merk, former patent holder of IVM. The statements says that pre-clinical and clinical studies showed no evidence the drug might work for covid.
Afterwards they show some figures from a survey done by the Brazilian Medical Association. From the interviewed doctors, 65,3% believes CQ is ineffective to treat covid, and 58,6% believes IVM is ineffective.
Thenm they report some common side effects of HCQ + IVM: increased QT interval, diarrhea, headaches, compromise of liver functions, etc.
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There are documented cases of deaths from people taking the covid-kit. See [2].
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This seems to have become a recurrent theme in HN, and, for once, Brazil is ahead of the curve. I might aggregate information from the press and medical associations and make a proper answer next time this show up.
If the covid treatment trend in America follows the same path it had in Brazil, get ready for: ozone therapy (in the anus), and HQC inhalation.
[1] https://ictq.com.br/farmacia-clinica/2580-pneumologista-aler...
[2] https://super.abril.com.br/saude/pacientes-vao-para-fila-de-...