Testosterone enanthate ( USAN , BAN ) (brand names Delatestryl , Testostroval , Testro LA , Andro LA , Durathate , Everone , Testrin , Andropository ), or testosterone heptanoate , is an androgen and anabolic steroid and a testosterone ester .    Along with testosterone cypionate and testosterone propionate , it is one of the most widely used testosterone esters.  Testosterone enanthate was first introduced in 1952.  Administered via intramuscular injection , it is the most widely used form of testosterone in androgen replacement therapy . 
Regardless of your purpose be it performance enhancement, TRT or a full blown HRT program you will be very hard pressed to find a better testosterone than Testosterone-Cypionate. In the world of TRT most will find 200mg every 7-10 days to be fairly common place and generally speaking about as high as you’ll ever go but of course in performance enhancing doses will necessarily be much higher. For the performance enhancer minimal dosing will generally be in the 400mg-500mg per week range and most commonly split into two even doses twice per week; for example, for 400mg total per wee k you might administer the hormone at 200mg on Monday and 200mg on Thursday continuing such a schedule until your total duration is complete.
For many 500mg per week will be as high as they ever need to go but in more hardcore circles it is not uncommon for doses to reach levels of 1,000mg per week and at extreme elite levels, especially in competitive bodybuilding they can go much higher. Keep in mind, while the benefits of use will increase as the dose does so will the potential and probability of adverse effects. There is a strong risk to reward ratio at play and in the end you are the only one who can determine how far you want to go with that. Yes, absolutely anabolic steroids and especially those of a pure testosterone nature such as Testosterone-Cypionate can be used safely and effectively but responsible use will always prove to be the ultimate key.
Part of responsible use will always include what is known as a Post Cycle Therapy (PCT) plan in order to normalize the body after use has been discontinued. Recall, the use of such hormones as Testosterone-Cypionate will suppress natural testosterone production but natural production will begin again once use is discontinued; however, such production will not begin instantly and there are things we can do to speed up the process. The sooner we get our natural production back up and running the more progress we made through our anabolic steroid use will be kept but most importantly our overall health will be protected; recall yet again, testosterone is essential to our health. This is where a good PCT plan comes in and it is by this plan we can stimulate natural production to begin; common supplemental items often include SERM’s such as Nolvadex and Clomid as well as the hormone hCG .
Keep in mind that using enanthate this way will cause a significant build up of testosterone in the bloodstream that will not cease to increase until four or five weeks of injections. This is due to the fact that taking a four hundred milligram injection, and another four days later, still has at least 200mg working from the previous dose. The third injection then adds another four hundred and the first is still not entirely used up. You may realistically have over a gram or so in the bloodstream before you know it. Just be careful, and keep this in mind when figuring out your dosages.