Mo’s clean, says Salazar

Farah won the 5,000 and 10,000 metres titles at the World Championships in Moscow to repeat the momentous double he achieved at last summer’s London Olympics, and last month broke the European 1,500m record at the Diamond League meeting in Monaco with three minutes, 28.81 seconds.
That run in particular sparked insinuations on website forums that Farah could be using performance-enhancing drugs, but Salazar dismissed such suggestions.