Konopka, whose contract with the Sabres expires with the
conclusion of the 2013-14 NHL season, said his positive test was
the result of taking an over-the-counter product that violated
the league's performance enhancing substances program.
"Unfortunately, I did not take the necessary care to ensure that
the product did not contain a prohibited substance," Konopka
said in a statement released by the NHL Players' Association.
"I want to stress, however, that I did not take this substance
for the purpose of enhancing my athletic performance."
The NHL said the term of Konopka's suspension will be served at
the beginning of any new contract.
Konopka had three points in 59 games last season, which he
started with the Minnesota Wild before being claimed off waivers
by Buffalo in January.
(Reporting by Frank Pingue in Toronto; Editing by Mark
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