Kanye West -- Theraflu In a Funk Over New Song

Theraflu is speaking ill of Kanye West's new tune, "Theraflu."

A company rep tells TMZ, "We in no way endorse or approve of the references or use of the image and likeness of Theraflu in this manner."

Kanye named the song after the cold medicine because he's so cold to his enemies they need a big dose.

As you probably know by now, the song reveals Kanye's love for his new GF, Kim Kardashian.

Theraflu reps did not say they would sue the singer, but their statement includes buzz words -- image and likeness -- that are often used in legal proceedings.

And this is priceless. In the statement, the Theraflu rep adds, "Theraflu is an over-the-counter product used to help relieve cold and flu symptoms that millions of consumers rely on."