The TGA has warned that a product called 100% Healthy Food For Men tablets are unsafe and should not be taken.
The tablets pose a serious health risk, it says.
The TGA tested the product and found that the tablets contain sildenafil, a prescription-only substance not declared by the manufacturer.
The Chinese characters on the label make therapeutic claims including that the product is indicated to treat impotence, the TGA says.
It says a number of people in Australia may have bought the product online, and that these people should stop taking the tablets and bring them to their pharmacy for disposal.
Image via TGA