The NSW Waratahs are standing by Henry O'Donnell after the talented centre accepted an 18-month ban for an anti-doping violation.
The former junior Wallaby's ineligibility started on July 1 last year in connection with an Anti-Doping Rule Violation issued under the Australian National Anti-Doping Policy.
The sanction as determined by Sports Integrity Australia relates to O'Donnell testing positive for D-amphetamine and ritalinic acid - two substances associated with ADHD medication - during an in-competition doping control test conducted on May 9 last year without a therapeutic use exemption.
The Waratahs and Rugby Australia note the SIA finding that the violation was not intentional and took place in a context unrelated to sport performance.
O'Donnell now holds a therapeutic use exemption for the medication that he has been prescribed to treat his ADHD, and will be eligible to return to play from January 1, 2027.
