purchase [Medicated Goo]
As Darius noted, music itself is a remedy for what ails you. And Steve Winwood has long been one of my favorites to make me feel better. Not that Traffic's Last Exit album was that good, but it includes Medicated Goo, and that is a fine example of Traffic at its best.
I kind of like the imagery of the touring medicine show that the song evokes, and there have been a number of bands that styled or named themselves accordingly: Dr. Hook & The Medicine Show and Old Crow Medicine Show, as well as songs with lyrics that do the same: "Say, Say, Say" and "Your Song".
The song was co-written by Jimmy Miller, who also made music history with Blind Faith and the Rolling Stones.
It's not a very difficult song to play, so it's no surprise that there are a number of cover versions listed at YouTube:
There's a Dave Mason version but since he was part of Traffic, that may not count as a cover?
Scott Sharrard and the Brickyard Band
The Black Crowes
Dreams
Band of Heathens
Jackie Greene