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When you start to feel the flu's first symptoms, you probably reach for the medicine cabinet.

But now, new research shows taking fever-reducing medicine creates more harm than good.

The study shows that when you lower your fever, you may get the sense you're feeling better, even though you're still contagious.

That false sense of feeling good means you may not stay home, spreading the virus to your friends and coworkers.

Health experts recommend only taking medicine at the end of the flu to take the edge off of the recovery.