> Ivermectin and the like have more research than the vaccine
That's very very unlikely. Even considering the Nobel prize for it. Simply because the sheer scale of the pandemic.
There are more vaccines in development and use against COVID than there are Ivermectin clinical trials in total.
> they’ve been deployed for longer and at least passed phase 1 trials, which the vaccine has not (only preliminary results).
That doesn't mean they are not safe. The phase 1 trials run to 2022 Nov, because there's a long follow up period.
Nothing can guarantee that there's not some mysterious missed interaction. It's probability is low and getting lower day-by-day. This tail risk is just not that important for safety. It makes very little sense to emphasize this, because we also don't know the long term interaction of Ivermectin and COVID-19.