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When the flu has you down, be careful what you take.

The FDA is warning about unapproved flu medications being sold online.

Ten retailers got warnings after selling so-called generic Tamiflu.

The companies claim their products are the most effective alternative to the flu shot.

These online drugs are not FDA approved, and may be too strong or not strong enough.

Read or Share this story: http://www.wcnc.com/story/news/health/2014/07/02/10973216/