Eight Premier League players will be stopped from playing for their clubs this weekend, after Brazilian football authorities triggered a Fifa rule to prevent prescription drug levitra them appearing.
Liverpool, Manchester City, Chelsea, Manchester United and Leeds United will all be affected.
Players not released for an international window can be banned for five days after the window ends under the Fifa regulations.
The decision covers September 10 to 14.
Brazil invoked the bans after the Premier League real viagra pharmacy prescription stopped players from appearing for their country if it meant travel to red list countries.
Players travelling to red list countries would have had to miss several games on their return because of the 10-day isolation period required under UK rules.
In addition to missing their sides’ weekend games, Chelsea defender Thiago Silva and Manchester United midfielder Fred will also not be allowed to play in their teams’ opening Champions League games against Zenit St Petersburg and Young Boys on Tuesday.
However, it is understood Brazil have not asked for Everton forward Richarlison to be prevented from featuring against Burnley on Monday. It is felt Brazil showed leniency in that specific case as Everton allowed Richarlison to play at the Olympic Games when the regulations did not force them to.
The move also affects three Liverpool players, Roberto Firmino, Fabinho and Alisson; Manchester City pair Ederson and Gabriel Jesus; and Leeds forward Raphinha, who had been called into the Brazil squad for the first time.
Wolves and Mexico forward Raul Jimenez; Newcastle’s Paraguay midfielder Miguel Almiron and Watford’s Chile defender Francisco Sierralta are also affected.
So far, none of the clubs affected have made any public statement on the matter.