as we mentioned, employees at the brothel where lamar odom was found unconscious say they saw him use cocaine as well as herbal supplement tablets. in the case of the herbal supplement, a legal product, something sold at the brothel and other places, a supplement the brothel owner says is herbal viagra. it's herbal and legal, is it safe? >> reporter: it's available nearly everywhere, gas stations, sex shops, and all over the internet with dozens of brands. it's called herbal vyingiagra b it's not real viagra. the food and drug administration warned about some of the products, stiff nights, king of romance, black panther, rhino blitz. in studies founded by pfizer,