The 24-year old Shulga, a member of the Halifax Wavecutters swim club, tested positive in-competition during the Eastern Canadian swimming championships in Montreal last February.
His urine sample revealed the presence of prohibited stimulants, N-ethyl-l-phenyl-2-butanamine and 1-phenyl-2-butanamine, the Canadian Centre for Ethics in Sport (CCES) said in a release Wednesday.
Bette El-Hawary, executive director of Swim Nova Scotia, said the stimulants were not listed on a the label of a supplement that Shulga was taking at the time.
“Obviously our organization is concerned,” El-Hawary said in an interview on Wednesday. “There was some misleading information. Not all of the ingredients had been listed on the product that was purchased. Right now, as an organization, we are educating our members about the use of any substance.”