Would Ivermectin attenuate effects of mrna and/or adenovirus vaccines?

I have a friend who is nearly 70yo and he is planning to take the moderna shots because he has plans to see places with his significant other and probably thinks that he won't get to do that before he dies unless he subscribes to the whole 'vaccine passport' thing. He's right of center, and has always been a GLP'er (whether wittingly or not) but his priorities are as they are because of his age and his relationship. He's kind of my anchor in the sea of libtards, so I cannot deny that some of my concerns for him are selfish.
Aaanyway,
I've wondering what you all think of Ivermectin's effect on the vaccinated or soon-to-be- vaccinated. (phage?)
So my understanding is that the mrna vaccines present mrna surrounded by lipids which attach to your cell walls, open, and pass the mrna through your cell walls where they are processed to produce a protein.
The reasoning behind the use of hcq+zn+doxycyclene/azithromycin was to use hcq as a zinc ionophore to allow zinc into your cells to stop rna from being replicated. Is ivermectin supposed to behave similarly? I'm not seeking medical advice; only understanding.
If so, I wonder: if you were to take ivermectin before or soon after receiving the mrna vaccine, would it reduce the vaccine's effects on you? Would it attenuate the production of the lab-designed spike protein?
What do you think? Any studies you can reference that might shed more light on this?

Thanks in advance, GLPers.