Upmax 'natural' sex pill banned for containing a substance like 'viagra' A product image from the UPMAX website. IT claims to be an "all natural" sex pill but the medicines safety watchdog yesterday banned the herbal supplement Upmax because they contain a viagra-like substance. Promising to work within 30 minutes and provide 36 hours of arousal, the pills are being advertised on the internet as the "weekend pill." They are being sold online and via mail order in Australia. However, the Therapeutic Goods Administration has swooped on the product warning it posed a serious threat to men's health and should not be taken. The label claims the tablets contain ginseng, wild yam, white willow, cayenne and oyster extract but testing by the TGA found that they contain the undeclared substance sulfoaildenafil. "Consumers are advised that sulfoaildenafil is an analog of the prescription-only medicine sildenafil (which is the active ingredient in viagra)," the TGA said. The supply of UPMAX capsules is illegal and the TGA is working with Customs to seize and destroy future shipments to prevent them entering the country. "TGA investigations have shown that a number of people in Australia have bought the product online," the watchdog said.