Endurance rider Christine Yeoman may compete in international competition once more after a provisional ban was lifted by the International Equestrian Federation (FEI) on 16 November.
In a statement Mrs Yeoman said she was “delighted”, adding: “I am not guilty of any wrongdoing and feel this is a very positive step towards clearing my name.”
A spokesman for the FEI told H&H that although the temporary suspension had been lifted a final decision is still to be made by the FEI tribunal.
Mrs Yeoman was suspended after her horse Forest tested positive for the banned substance ractopamine at Euston Park on 9 August.
She suggested a contaminated tub of the equine antacid Neigh Lox had caused the positive test (news, 12 November).
A spokesman for Saracen, who distribute Neigh Lox in the UK, said discussions were still ongoing with the American manufacturers and he could not confirm if the substance had caused Forest to test positive.