I agree that a doctor should not prescribe a drug that is going to interact dangerously with a patient's other medication. I also agree that a pharmacist should not fill a prescription if they know it will interact dangerously with the patient's other medication.
But I also don't know the dosage schedule doctors who are prescribing Ivermectin are using. They're probably using one from a research paper that they believe justifies its use to treat or prevent COVID. Those dosage schedules are afaict similar to how it's used to treat on-label conditions - take one dose every three months, or whatever.
It's pure speculation that doctors are out there writing prescriptions for dangerous dosages of Ivermectin.
However one thing for sure is that in lieu of a prescription, people are more likely to self-medicate with a dangerous formulation and dosage, ex: horse paste.
But I also don't know the dosage schedule doctors who are prescribing Ivermectin are using. They're probably using one from a research paper that they believe justifies its use to treat or prevent COVID. Those dosage schedules are afaict similar to how it's used to treat on-label conditions - take one dose every three months, or whatever.
It's pure speculation that doctors are out there writing prescriptions for dangerous dosages of Ivermectin.
However one thing for sure is that in lieu of a prescription, people are more likely to self-medicate with a dangerous formulation and dosage, ex: horse paste.