The couple had recently put their luxury home up for sale and their bodies were found by an estate agent who was at the property to prepare it for an open-house viewing, the Toronto Globe and Mail reported, citing a family member.
The 75-year-old founder of Apotex Pharmaceutical Holdings Inc. and his wife Honey Sherman were found dead in their Toronto home on Friday under what police called suspicious circumstances.
Hopkinson said police, fire units and ambulance responded to a "medical complaint" just before noon on Friday.
They declined to say whether the bodies showed signs of trauma and did not provide details on the time or cause of death.
Two bodies covered in blankets were later seen being removed from the house.
The couple has been well-known for the philanthropy they carried out, giving tens of millions dollars to hospitals, Jewish organizations and universities, reported local television.
Mr. Sherman, 75, founded the privately held Apotex in 1974, growing it by introducing large numbers of low-priced generic drugs that took market share from brand pharmaceuticals.
"All of us at Apotex are deeply shocked and saddened by this news and our thoughts and prayers are with the family at this time,"Apotex wrote in a news release".
Forbes has estimated Mr. Sherman's fortune at $3.2 billion.
The couple had four children. "As employees, we are proud of his tremendous accomplishments, honoured to have known him, and vow to carry on with the Apotex objective in his honour". "Barry Sherman was a more reserved man but a man who over his business career created hundreds and hundreds of jobs for people in the City of Toronto and he loyally invested in the City of Toronto, keeping a lot of the manufacturing and other operations of Apotex here in the city".
"I am beyond words right now", Ontario's Health Minister Eric Hoskins said on Twitter.
Apotex released a statement on Saturday paying tribute to its founder, praising both his philanthropic efforts and what it described as his vision for health care.
Toronto mayor, John Tory, said the he was "shocked and heartbroken" to learn that the two were found dead in their home. A very, very sad day.