I doubt my kid or her friends will want to figure out how to give themselves a B12 shot or take my thyroid meds, so I don’t hide anything currently in the house. Back when I had a prescription for benzos for as needed use, I did hide, but not lock up, those.

I keep my anti-anxiety meds in a locked box (combination lock) because why not? I take them only as needed situationally, not every day, so it isn't incovenient to keep them locked away.