What is the name of the song that has the lyrics "all I need is a
remedy" sung by two different people? I think this song came from the
80's era, but I could be wrong.

Hello,

I think you mean "remedy" by the Black Crowes, somewhere in the
middle, he shouts a few times "all i need is a remedy".
You can see the album it's on here:

http://www.amazon.com/exec/obidos/tg/detail/-/B000062XB3/qid=1045179916/sr=1-6/ref=sr_1_6/002-7550225-4777632?v=glance&s=music

you can listen to the track when you click on the title.

Links:
http://www.amazon.com

Hope this helps you out,
greetings,

cubist-ga

Could it be the song Lovesick by the Swingers?
http://www.angelfire.com/bc/countbeat/lyriclovesick.html

You may listen to an audio clip here:
http://www.angelfire.com/bc/countbeat/audio.html

Perhaps It's the song "Talk to Me"?
http://www.curbsidewilderness.com/talk.htm

As a child of the 80s... it brought to mind "All I need is a miracle"
by Mike and the Mechanics.  However, I can't think of any with exactly
that line

All I need is a miracle, all I need is you (all I need is a miracle)
All I need is a miracle, all I need is you (all I need is a miracle)
All I need is a miracle, all I need is you