Health Canada says it has seized counterfeit Viagra sold at a convenience store in Toronto.

The 100 mg tablets, the federal agency said, were sold at Rocky Convenience, located on St. Clair Avenue West, near Runnymede Road.

“The manufacturer of Viagra has confirmed that the seized product is counterfeit,” a public advisory issued by Health Canada read.

While it is unclear if the counterfeit product contains any drug at all, Health Canada noted that since it has not been assessed for efficacy or quality, it could have a higher dosage than shown on the label or contain “dangerous contaminants and hidden ingredients.”

“Like the authentic version, the counterfeit Viagra is labelled to contain the prescription drug sildenafil. Sildenafil should be used only under the supervision of a health care professional,” Health Canada wrote, adding that those who use the drug are are at an increased risk of heart attack, stroke, chest pain, high blood pressure and abnormal heartbeat.

Counterfeit Viagra Counterfeit Viagra sold at a Toronto convenience is seen above. (Health Canada handout)

Anyone who purchased the product at that aforementioned convenience store should “immediately stop using” it and safely dispose of it, Health Canada said. They should also consult a healthcare professional if any health concerns arise.

“The best way to make sure your prescription drug is authentic is to buy it from a licensed pharmacy, with a prescription from your health care professional,” Health Canada said.

“Prescription drugs cannot be sold outside of a licensed pharmacy and should only be taken under the care of a health care professional because they are used to treat specific health conditions and may cause serious side effects.”