Dr oz recommends vicks vaporub or vinegar solution for nail fungus. are they effective at all? how about tea tree oil?

Yes and no.: All three of those can help to some extent but are not what you would call effective except in all but the most minimal of fungal infections. Since a fungal nail infection is slow growing, the above remedies can be tried. After about three months, if no improvement is noted, stronger remedies should be tried under a doctors supervision.

Hogwash: First off, make certain your nails are fungal with a fungus culture. If they are, the most effective treatment is oral anti-fungal medication, which has been recently shown to be much safer than we originally thought. Pulse therapy Lamisil (terbinafine) (14 pills in 6 months) has the same cure rate as taking it every day for 3 months. See a podiatrist and be leery of doctors on tv.