Health Canada has suspended the licence of a Toronto-area drug-testing laboratory and asked companies who use the lab to stop selling products they've had tested there.

The agency said it found falsified test results during an inspection of Chemi Pharmaceutical Inc., in Mississauga.

The long list of products that may be affected includes diabetes and heart medicines, veterinary medicines, a preservative used in cosmetics, an acid reflux treatment and Geritol vitamins.

"As a precautionary step, companies that have had testing done by Chemi Pharmaceutical are being asked to temporarily halt sales of those products until their safety can be confirmed," Health Canada said in a statement Tuesday.

The agency also said that it has not seen any indication so far that the health of Canadians has been "compromised."

"Health Canada will be working around the clock to confirm the safety of these products, and will take immediate action when required and inform Canadians," the statement said.