Ivermectin is one of the many drugs that is affected by the P450 issue. If you plan on taking it be very aware of how things can make a difference if you have normal enzyme activity. And if you have never had a thorough P450 genetic test be careful of what you take with it.
And for those taking Quercetin..same applies. I can’t remember if there was an interaction with Ivermectin but it does affect other drugs
Anytime you are taking, or considering taking, a new drug it is a good idea to check for interactions. Especially as you get older (it happens to us all).
https://www.drugs.com/drug-interactions/ivermectin.html