NPP (nandrolone phenylpropionate) Npp sphinx is a fast acting Nandrolone. 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 fast onset and mild properties of this steroid therefore make it more suited for cycles with short or longer duration. In general one can expect to gain muscle weight at about half the rate of that with an equal amount of testosterone. Npp sphinx 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. Npp is also a popular steroid among 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. Its prefered by female athletes. 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 occassionally confronted with virilisation symptons when taking this compound. Should this become a concern, the shorter acting nandrolone Durabolin would be a safer option. Npp only stays active for a few days, greatly reducing the impact of androgenic buildup. 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, this will to help to stimulate the body to function again naturally. Clomid or Nolvadex are estrogen antagonists and are commonly used for a few weeks after a cycle has finished. They provide a good level of testosterone stimulation, although they may take a couple of weeks to show best results.