Montjeu will be running on medication when he tackles the Breeders` Cup Turf later today.
Trainer John Hammond has confirmed that he will be using bute, an anti-inflammatory drug, on the colt.
The use of bute and lasix - used to prevent the breaking of blood vessels - are both permitted under the rules in Kentucky.
The effects of bute are similar to those of asprin in a human and should help to ease for a time any pain Montjeu has been feeling from a sore ankle.
'We have the opportunity to use bute so it makes sense to use it,' said Hammond.
The trainer was also keeping his fingers crossed that the forecast of some showers in the run up to the race at Churchill Downs proves to be correct.
'We could certainly do with some rain, though the ground is not too bad as it stands,' he added.
'I haven`t had the chance to check myself but the Europeans tell me it`s not as firm as it can be in England.'
Hammond is by no means writing off the chances of Montjeu, who will probably be racing for the final time before retiring to stud.
The colt`s air of invincibilty has vanished after defeats in the Prix de l`Arc de Triomphe and Dubai Champion Stakes.
But the Chantilly trainer believes Montjeu deserves plenty of credit for his performance when going down narrowly to Kalanisi in the latter race.
'If the winner had trodden on a stone and not been able to run then everyone would have been saying what a good performance it was by Montjeu,' he said.
'The horse looks well after undergoing a long trip. He flew out from Beauvais but then the aircraft went to Stansted to pick up more horses.'
Hammond had been reluctant to confirm Montjeu a runner in the Breeders` Cup for some time - and immediately after the defeat in the Champion Stakes appeared to think that the horse would be retired immediately.
But part-owner Michael Tabor was keen for Montjeu to parade his talents at the Breeders` Cup.
'Montjeu is at the end of a long year and we wanted to give ourselves as much time as possible to see how he got over the last race,' said Hammond.
On the eve of the meeting, the workwatchers finally had the opportunity to catch a glimpse of Ireland`s Giant`s Causeway.
Aidan O`Brien`s challenger for the showpiece event, the Classic, was greeted by a bevy of cameras and pressmen as he emerged from the quarantine area.
Bizarrely, Giant`s Causeway covered about nine furlongs of the dirt in the company of a hack ridden by the stetson-hatted American trainer Wayne Lukas.
Lukas` pony was enlisted owing to a shortage of horses available for accompanying the Breeders` Cup horses in their work.
The colourful American grasped the opportunity for a close-up view of one of the main rivals to his Classic contender, Cat Thief, who won the race 12 months ago.
