British 800m runner Jenny Meadows is "in Mo Farah's corner" after the double Olympic champion withdrew from Sunday's Diamond League meeting in Birmingham.
Farah admitted being "emotionally and physically drained" after a BBC investigation alleged his coach Alberto Salazar had been involved in doping.
There is no suggestion Farah has done anything wrong.
"All of us want Alberto to prove to Mo there's nothing to hide," Meadows told BBC Radio 5 live.
"We're all friends with Mo and we think he's an honest guy. None of us think he's done anything wrong," she added.
Meadows admitted to "feeling drained" herself after a week in where international athletics came under investigation, but felt Farah should have competed in Birmingham.
"As a fan of the sport, you want to see clean athletes," Meadows added.
"I think a lot of British people will say Mo crossing the line in London was their moment of the Olympics in 2012.
"Obviously, we want it to be true. We really hope it is.
"But it does just make you question a lot of things and can clean athletes win? Then I look back at some of my races and say, 'I wonder what my true result was'."
The BBC's Panorama programme, Catch me if you can, alleged Salazar violated anti-doping rules and doped United States 10,000m record holder Galen Rupp in 2002 when the athlete was 16.
Rupp and Salazar, who became Farah's coach in 2011, strenuously deny the claims.