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 . 
Nandrolone promotes very significant increases in collagen synthesis and can also promote increases in bone mineral content. Therefore users can experience positive effects on connective and joint tissue, which are getting stronger during bulking, performance enhancing and mass gaining cycles. Nandrolone possesses a low androgenic rating of 37, which makes it favorable for those who are sensitive to androgenic side effects. Nandrolone binds very poorly with the aromatase enzyme, which is the enzyme responsible for the conversion of androgens into Estrogen.
Nandrolone lacks the 19th carbon that Testosterone possesses, which makes it a Progestin. Because of its Progestogenic nature, Nandrolone is known to produce severe endogenous natural Testosterone production suppression and shutdown. Therefore, it is recommended that at all times whenever using Nandrolone in a cycle that Testosterone should be utilized with it in order to maintain normal physiological function of Testosterone. Therefore by using this product, the individual do not need to be concerned about maintaining levels of testosterone.
Testosterone Cypionate is an esterified variant of Testosterone with a slow rate of release and a longer half-life. Testosterone Cypionate half-life is approximately 12 days. However, there have been a few reports of various patients that prefer Testosterone Cypionate because of the fact that some individuals tend to respond better at the injection site. A small percentage of individuals find the Cypionate variant to be much easier in terms of the injection site comfort and reaction. Testosterone can be considered as the original anabolic steroid, which is manufactured naturally in humans and in the majority of animal species. Thats why is Testosterone considered the safest anabolic steroid, because every individual’s body is accustomed to the effects of Testosterone.
Addition of Boldenone Undecylenate brings some more advantages. Boldenone is well known for its lean mass increases. Boldenone stimulate the appetite in far greater degree than any other anabolic steroids. Individuals using Boldenone can expect the same anabolic size, strength, and mass gains that would come from Testosterone with a lower Estrogenic activity and androgenic side effects. Gains from Boldenone itself should be solid lean mass gains with minimal water retention and would be a perfect addition to any bulking or lean mass cycle.
Injectable steroids are injected into muscle tissue, not into the veins. They are slowly released from the muscles into the rest of the body, and may be detectable for months after last use. Injectable steroids can be oil-based or water-based. Injectable anabolic steroids which are oil-based have longer half-life than water-based steroids. Both steroid types have much longer half-lives than oral anabolic steroids. And this is proving to be a drawback for injectables as they have high probability of being detected in drug screening since their clearance times tend to be longer than orals. Athletes resolve this problem by using injectable testosterone early in the cycle then switch to orals when approaching the end of the cycle and drug testing is imminent.