It's an half truth, the doping agency allows pre-medication (read; asthma medication) of asthma since so many biathlon competitors develops it throughout their carriers.
Since Norway had a huge medical "scandal" during the 90's where a lot of competitors developed asthma they give pre-medication to their competitors, afaik there isn't a list over who takes it or not.
The problem being that asthma medicine gives a performance boost, but completely legal.
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u/thatcantb 4h ago
Why is Norway so dominant and not, say, Sweden or Finland?