Noor Haddad works where infection meets the rest of medicine, and she likes it there. She trained in internal medicine first, then in infectious disease, and that order shaped how she thinks: the bug matters, but so does the whole person carrying it. That is also why she took on the reader mail here. Questions about a drug like ivermectin are almost never only about the drug.
Her rule for the Q&A is to treat every question as sincere, including the ones shaped by something the reader saw online. She would rather explain, without heat, why a petri-dish result does not map onto a safe human dose than make anyone feel foolish for asking. When the honest answer is that it depends on tests the reader has not had, she says so.
She covers the antiparasitic corner of the catalogue, where the science is genuinely interesting and the noise is genuinely loud. Nothing she writes here is a prescription for you. It is the calm, unhurried version of a conversation she would happily have in clinic.