TORONTO - Health Canada is advising consumers not to use several Chinese herbal products sold as treatment for erectile or sexual dysfunction.

The department warns that the products contain drugs that can only be sold in Canada under a prescription.

The products are: Nangen Zengzhangsu (may also be known as Nangen or Nangeng); Sanbianwan; Jiu Bian Wang; Tian Huang Gu Shen Dan; Zui Xian Dan Gong Shi Zi, and Power Up.

The first item is made by Hebei Luquan Shengwugongcheng Youxianggonsi but the makers of the remaining products are unknown.

Health Canada says the products are not authorized for sale in Canada and have not been found in the Canadian marketplace, but may have been brought into the country by travellers or purchased over the Internet.

The products have been found to contain sildenafil, used to treat erectile dysfunction; some also contain glibenclamide, a diabetes drug.