Reuters: Wyeth heartworm drug makes limited return in U.S.

[NaDiNe]

Wyeth heartworm drug makes limited return in U.S.
      

WASHINGTON (Reuters) - Wyeth will return a reformulated version of its Proheart 6 heartworm prevention drug for dogs to the U.S. market with restrictions to minimize side effects, U.S. officials and the company said on Thursday.
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