You mean like this study which shows no effect?
This randomized trial compares the effects of ivermectin vs placebo on time to symptom resolution within 21 days among patients with mild COVID-19.
jamanetwork.com
Or this study which showed no effect?
Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) has changed our lives. The scientific community has been investigating re-purposed treatments to prevent disease progression in coronavirus disease (COVID-19) patients. Objective To determine whether ivermectin treatment can...
bmcinfectdis.biomedcentral.com
Or this one?
onlinelibrary.wiley.com
This one did show a good effect.
Objective: This study was designed to determine the efficacy of ivermectin, an FDA-approved drug, in producing clinical benefits and decreasing the viral load of SARS-CoV-2 among asymptomatic subjects that tested positive for this virus in Lebanon. Methods: A randomized controlled trial was...
www.mdpi.com
But was retracted due to faulty data.
This one did show an even BIGGER effect.
Research Square has withdrawn this preprint....
www.researchsquare.com
But was retracted due to falsified data.
The vaccine is working. There's NO doubt about it. No data exists that would show anywhere NEAR the same efficacy. Especially, and don't take this lightly, given you yourself state it has to be taken EARLY which just isn't going to happen in a large percentage of patients in the best case scenario even if they eliminated every barrier to getting it. People just don't go to the doctor.