Like the parents of the little shaver below, my mum used Gentian Violet on our cancre sores and other oral issues. It is as highly effective now as it was then- it's been around since the 1880's. Watch your clothes, though.
Toothache = Oil of cloves.
Headache = aspirin (already mentioned) and an icepack (not mentioned, I think)
Nausea = flat ginger ale at room temp. Sugar free jell-o powder in hot water does the trick, too.
Constipation: lots of herbal remedies have been around forever. Louis Armstrong was a great fan of Swiss Kriss: Satchmo's slogan: "Leave It All Behind Ya!"
We used mercurochrome too, sometimes Iodine (YEEEOWW!) and Hydrogen Peroxide. The inner masochist in me was fascinated to watch my wound fizz.
Dad used to put meat tenderizer on wasp and bee stings. It sounds crazy, but it worked.
Colds = chicken soup.