The Team Sky rider was granted TUEs in May 2013 and April
2014 to treat the condition but chose not to apply for a TUE -
which allows athletes to take banned substances on medical
grounds - when he was advised to do so during the 2015 Tour.
"I didn't feel having a TUE in the last week of the Tour was
something I was prepared to do. It did not sit well morally with
me," he told the BBC.
In 2013, Froome was allowed to use prednisolone for his asthma
for a week before winning the Criterium du Dauphine while the
following year he took it for a week during the Tour de
Romandie, as he defended his title.
Bradley Wiggins and Team Sky have been under scrutiny since
hacked medical records showed the Briton was granted TUEs for
anti-inflammatory drug triamcinolone before the 2011 Tour de
France, his 2012 Tour de France win and the 2013 Giro d'Italia.
There is no suggestion that Wiggins, Froome or Team Sky broke
"I think WADA (the World Anti-Doping Agency) need to tighten
their regulations around TUEs, so they're not something that we
question, their legitimacy," added Froome.
"It's not good for sport in general. The fact that we're
discussing the validity of results, that brings it back to the
authorities, it is something they need to tighten up on so that
there aren't questions being asked anymore."
(Reporting by Pritha Sarkar, editing by Peter Rutherford)
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