Ben Smith, trainer of Everest-bound In Her Time, has had his trainer's licence suspended after an investigation by Racing NSW stewards.
Stewards were acting on an irregularity in two swab samples from a pair of Smith-trained horses.
Smith was also charged with refusing to give evidence by not providing the names of the person or people who supplied him with the unidentifiable products found in his stable.
"Myself, Philip Dingwall and two of our investigators confiscated a number of unlabelled and unidentified bottles that were found and they'll go for testing," Racing NSW chief steward Marc Van Gestel said.
Smith was also charged with providing false evidence on two occasions, which he pleaded guilty to, when stewards conducted the stable inspection.