Wyeth Reverses Last Year's Loss  NEW YORK (Reuters) - Wyeth &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=WYE.N target=/stocks/quickinfo/fullquote"&gt;WYE.N&lt;/A&gt; on Wednesday reported a  third-quarter profit, reversing a loss in the year-ago period,  when it took a \$2 billion charge for liabilities from its  recalled "fen-phen" diet medicines.