Former Wales scrum-half Rhys Webb has been banned for four years by the French Anti-Doping Agency.
Webb was suspended soon after joining second tier French side Biarritz last summer after returning a positive test for human growth hormone (HGH) during a training session.
Both A and B samples came back positive.
Webb will now be ineligible to play until 2027, meaning he will be 38 by the time the ban runs it course.
Biarritz have been asked to comment.
Webb won 40 caps for Wales before announcing his international retirement in the build-up to the 2023 Rugby World Cup.