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. 
Of course a discussion of this nature would be useless without examples and we have provided some for you here. Each anabolic steroid cycle listed below is simply an example and doses and total duration may need to be adjusted to meet your needs. We have kept the total duration at 16 weeks in each example except for one but you will find each cycle to be very effective and efficient and while that remains true such cycles should only be undertaken by those with experience. If you are a beginner please stick with the beginners anabolic steroid cycle discussed above.
The use of Clenbuterol Hydrochloride also carries with it possible side effects that can be severe; in fact, dangerous would be a more accurate description. Such effects are most commonly associated with abuse through high doses and far beyond recommended extended periods of use. The severe side effects of Clenbuterol include high blood pressure, irregular heartbeat, trembling and even panic. Some studies have also shown that Clenbuterol abuse can also lead to cardiac hypertrophy, which could potentially lead to death. It is very possible to use this compound without such effects, but as with so many things in life it will require responsible use and a thorough understanding of Clen.