Possibly the most popular steroid compound of the last few decades, Deca-Durabolin earns its reputation by producing large muscle gains, aiding with joint pain and improving the immune system. These benefits come from a substance that has a relatively low rate of side effects because it doesn’t convert to estrogen as much as many of its counterparts. Not that Deca is without its problems. First, Deca needs to be taken over long periods of time (cycles of 12 weeks minimum) for it to be effective. Also, Deca must be taken with testosterone because the body’s natural levels will drop. Testosterone should also be a part of a Deca cycle’s post-cycle-therapy. Deca can also cause a good deal of water retention and acne.
Deca-Durabolin is injectable steroid nandrolone decanoate. This compound came around early in the wave of commercial steroid development, first being made available as a prescription medication in 1962.
World wide “Deca” is one of the most widely used anabolic steroids. Its popularity is due to the simple fact that it exhibits many very favorable properties. Structurally nandrolone is very similar to testosterone, although it lacks a carbon atom at the 19th position (hence its other name 19-nortestosterone). The resulting structure is a steroid that exhibits much weaker androgenic properties than testosterone. Of primary interest is the fact that nandrolone will not break down to a more potent metabolite in androgen target tissues. You may remember this is a significant problem with testosterone. Although nandrolone does undergo reduction via the same (5-alpha reductase) enzyme that produces DHT from testosterone, the result in this case is dihydronandrolone. This metabolite is weaker than the parent nandroloness, and is far less likely to cause unwanted androgenic side effects. Strong occurrences of oily skin, acne, body/facial hair growth and hair loss occur very rarely. It is however possible for androgenic activity to become apparent with this as any steroid, but with nandrolone higher than normal doses are usually responsible.