I know there are natural ingredients in the medications, but they are pretty concentrated. I'm not a chemist but it seems to me that the bees would have to be foraging on A LOT of plants to equal what's on/in some of those medications. Not saying it won't help, though.
As for hops, my husband was very
supportive of planting in our apiary and we now have 6 or so established plants. The problem is who gets to the buds first -- the bees or the husband who likes to make beer.