My belly is aching, there's a pain in my head
I feel like I'm dying, and I wish I were dead
If I live till tomorrow, it'll be a long time
And I'll spend all my life and I'll die on co-dyne
And it's real, and it's real, one more time.

It's on Illuminations, and the Best of Buffy St. Marie. If it doesn't show up here first, I'll go get it and transcribe it.
n.b. She says codyne in the song, not co-deen. Dunno why.
Blessings,
Barbara