You have, say, 10 different drugs you might use along with Ivermectin in a "multi-drug regime". From these 10 drugs, you can generate 10-choose-4 = 5040 different 4-drug regimes. As many as you please, effectively.
Assuming Ivermectin is useless, and your study is p95, how many false positives do you expect to get?
Assuming Ivermectin is useless, and your study is p95, how many false positives do you expect to get?