On the subject of Home Remedies - I can't say enough about the preventative measures of Apple Cider Vinegar (ACV) and raw Garlic.
ACV (the kind with "the mother") is not cheap, but it's health benefits both internally & externally could equal a lot of long term savings. You're going to have to look up all the stuff it can do because it's too much to list here (but there are entire YouTube videos devoted to the stuff).
I love garlic - and it's cheap. Since I've been eating both raw and pickled garlic, I never seem to get sick (and if I feel something coming on I eat more of it and the feeling only lasts a day or two at most). It is a natural antibiotic and has different health properties whether pickled, cooked or raw. (Warning, if you go the raw route, best to chop it up and eat it with some honey, because it's "hot!")
I'm making a list of common "superfoods" (due to their super health properties) that can be incorporated into a diet in various ways and purchased at any supermarket:
Apple Cider Vinegar
When I make juice (I don't use an expensive juice machine, just an old blender) I include a little of each of these along with the main ingredients: Water, Apples, Pears, Grapes, Bananas, Oranges, Carrots, and any other fruit I have on hand.