After being stopped at the border, an authorized natural health product, Prema G (Granules packaged in tea packets, NPN: 80035944) was tested by Canada Border Services Agency and found to contain a hidden ingredient (hydroxyhomosildenafil thione) that may pose serious risks to the health of Canadians. Prema G was authorized by Health Canada but not with the ingredient, hydroxyhomosildenafil thione. Hydroxyhomosildenafil thione is similar to sildenafil, which can be found in products promoted as sexual stimulants. Drugs authorized by Health Canada that contain these ingredients can only be sold with a prescription and by a pharmacy.
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