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Swiss hurdler, and doctor, Kariem Hussein, is now out of the Tokyo Olympics with a nine-month drug ban. He tested positive at the National Championships and was informed on July 16.

He tested positive for nikethamide and the metabolite N-ethylnicotinamide.

In a statement, the 32-year-old wrote, “This is the most difficult post of my life.”

“My dream of the Olympic Games in Tokyo ended. Since last Friday I know that the result of doping control at the Swiss Championships showed a substance that is not allowed for competitions.”

“It is allowed for training, not for competitions though,” added the 400m hurdles specialist. Hence the short suspension.

He competed in the 2012 and 2016 London and Rio Olympic Games as well as the 2017 London World Championships. He is a seven-time national champion.

His personal best is 48.45 from 2015.

Nikethamide is a stimulant that trades under the brand Coramine. N-methylnicotinamide is an experimental drug with no approved indication or marketed formulation. However, it apparently works or helps nikethamide work more effectively.