A quick search for modafinil contraindications tells me it should not be taken with alcohol and it makes certain kinds of birth control less effective.

I’m not even remotely qualified to so much as read and understand medical jargon, but even I can recognise that several items on this ([0]) long list of stuff that interferes with (or is interfered by) mondafil includes both food and stuff you can get without prescription from the new-age-hippie section of a supermarket. Given the dumb things my hippie mum gave me as a teenager (and my dad without telling him [1]), all I can say is that this seems to me to be unwise to make trivially available.

Perhaps I’m wrong. After all, the fact a random person like me can’t read and interpret the warnings like a professional would is as much a limit on how seriously to take my concern as it is a reason to be concerned.

[0] https://www.drugs.com/drug-interactions/modafinil-index.html

[1] at the very least Bach flower “remedies”, which would probably be harmless except for all the alcohol. She thought she was doing all of us a favour.