indication

The claim that supplemental 19-norandrostenedione has anabolic effects is unsubstantiated.

mechanism of action

19-Norandrostenedione may be metabolized to 19-nortestosterone in both men and women. 19-Norandrostenedione, also known as nandrolone, is the basic substance of some very popular injectable anabolic steroids. 19-Norandrostenedione is not metabolized to testosterone. Whether increases in 19-nortestosterone levels that may be produced by taking oral 19-norandrostenedione would be sustained long enough to show increase in nitrogen retention and muscle strength and mass is unknown.

biotransformation

Specific metabolites of 19-nor-5-androstene-3, 17-dione are 19-nordehydroandrosterone and 19-nordehydroepiandrosterone.

absorption

Absorption appears variable, but some absorption does occur