Nadrolone Decanoate - 300mg Deca 300 is an extremely long acting steroid compound with a slow release time of up to three-four weeks. It's popularity is due to the simple fact that it exhibits many very favourable properties. Structurally Nandrolone is very similar to testosterone. The muscle building effect of this drug is quite noticeable, but not dramatic. The slow onset and mild properties of this steroid therefore make it more suited for cycles with a longer duration. In general one can expect to gain muscle weight at about half the rate of that with an equal amount of testosterone. Dosage: A cycle lasting eight to twelve weeks seems to make the most sense, expecting to elicit a slow, even gain of quality mass. The dosage for men is usually in the range of 200-600mg. Deca is also a popular steroid amoung female bodybuilders. They take a much lower dosage on average than men of course, usually around 50mg weekly. Women are better using NPP. NPP is the faster Nandrolone Phenylpropionate. It is preferred by female athletes for the reason that there is less build up of the drug in the system due to its fast release. Although only slightly androgenic, women are occasionally confronted with virilisation symptons when taking this compound. Should this become a concern, the shorter acting NPP would be a safer option. This drug stays active for only a few days, greatly reducing the impact of androgenic buildup if withdrawal were indicated. Endogenous testosterone levels can be a concern with Deca-Durabolin, especially after long cycles. It is therefore a good idea to incorporate ancillary drugs at the conclusion of therapy. An estrogen antagonist such as Clomid or Nolvadex is therefore commonly used for a few weeks, furthermore these provide a good level of testosterone stimulation, although they may take a couple of weeks to show the best results.