In February 2007, the consumer advocacy group Public Citizen released a petition requesting that the FDA ban oral contraceptives containing desogestrel, citing studies going as far back as 1995 that suggest the risk of dangerous blood clots is doubled for women on such pills in comparison to other oral contraceptives.  In 2009, Public Citizen released a list of recommendations that included numerous alternative, second-generation birth control pills that women could take in place of oral contraceptives containing desogestrel. Most of those second-generation medications have been on the market longer and have been shown to be as effective in preventing unwanted pregnancy, but with a lower risk of blood clots. 
Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia .  The infamous "duchess" cocktail administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , a metenolone ester, and a trenbolone ester.