On Tuesday night the German newspaper reported that Vidal had left the team's headquarters on several occasions in January and returned in an intoxicated state.
However, Vidal has now released a statement on his official Twitter account strongly denying the claims.
He said: "I would like to say that the claims published today in a German newspaper are absolutely false.
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"I'm 100 per cent committed to my team and preparing for the rest of the season, which will be very important for all of us.
"Thanks to my club for their support and also thanks to my fans for their love as always."
Bayern Munich sporting director also issued a firm denial and offered the player the club's complete backing.
"It is not the truth," he added. "Our relationship with Arturo is very good and he told us that all the rumours are fake.
"The media is trying to build a situation that degrades us in the Bundesliga. But the entire disturbance will make us stronger as a team.
"As long as I am working here we will stand together if someone is attacked by somebody. We will fight the agitation."