Characteristics:
Testosterone is the prime male androgen in the body, and as such still the best possible mass builder in the world. It has a high risk of side-effects because it readily converts to a more androgenic form (DHT) in androgen responsive tissues and forms estrogen quite easily. But these characteristics also provide it with its extreme anabolic tendencies. On the one hand estrogen increases growth hormone output, glucose utilization, improves immunity and upgrades the androgen receptor, while on the other hand a testosterone/DHT combination is extremely potent at activating the androgen receptor and eliciting major strength and size gains. While not always the most visually appealing result, there is no steroid on earth that packs on mass like testosterone does.

Testosterone Cypionate is a single-ester, long-acting form of testosterone. Due to the length of its ester (8 carbons) it is stored mostly in the adipose tissue upon intra-musuclar injection, and then slowly but very steadily released over a certain period of time. A peak is noted after 24-48 hours of injection and then a slow decline, reaching a steady point after 12 days and staying there for over 3 weeks time. Of course most users of anabolics will not find adequate benefit in the use of this steady-point dose, so this product is normally injected once a week, making the very lowest dose higher than half the peak dose at any given time. This is roughly the starting blood level as well. A long-acting testosterone ester is a must-have in any mass-building cycle. As such this is a very decent product.

A long-acting testosterone ester may be the best for all your mass-building needs, but its not an easy product to use. Because of the extreme length of action (3-4 weeks) one cannot easily solve occurring problems by simply discontinuing the product, as it will continue to act and aggravate side-effects over extended periods of time. In regards to damage control and post-cycle therapy, some familiarity with the use of ancillary drugs is required prior to using a long-acting testosterone product. Nolvadex and Proviron will come in very handy in such cases and post-cycle HCG and clomid or Nolvadex will be required as well to help restore natural testosterone. Frequency of side-effects is probably highest with this type of product.

While most will tell you it's a waste to not use testosterone, as it will take ages longer to build proper mass, these are all points to take into consideration. Testosterone is a product that is heavily used by beginners and veterans alike and justly so. Those who fear they may never understand the proper use of ancillary drugs, may want to suck it up and invest in some propionate or suspension testosterones instead. These are much shorter acting and easier to control, but they do need to be injected once every two days, whereas this type of ester will impart great gains with a single weekly injection. Something to keep in mind.