Prohormone & Supplement Ingredients:

17a-methyl-3-oxo-19-norandrostene-4, 17-diol (Oxavar)

Oxavar (Methylhydroxynandrolone) is illegal in the US but currently (2012) available in the UK.

Methylhydroxynandrolone (MOHN or M4OHN for short) is a potent derivative of nandrolone. This agent is orally active and non-aromatizable, with a profile somewhat similar to that of Winstrol or Anavar; primarily anabolic, with no discernable estrogenic activity.

According to early assay results, methylhydroxynandrolone is 13 times more anabolic than methyltestosterone, with approximately 3 times greater androgenicity.

Although animal assay data doesn't translate perfectly to humans, it remains clear that MOHN is considerably stronger on a milligram for milligram basis than the common prescription steroids.

MOHN is also a bit more androgenic than the assay data conveys, and behaves slightly more like trenbolone than nandrolone in this regard.

Its 4-hydroxyl group, a modification that prevents its 5-alpha reduction in humans to weaker "dihydro" metabolites in the skin, scalp and prostate, intensifies the relative androgenicity of this steroid. Athletes favor it for lean gains in muscle mass, strength, and performance, with minimal side effects.

Common user feedback includes gains in lean muscle tissue, moderate strength gains, less time needed for recovery, increased fat loss, increased vascularity, and some people say that they have seen a temporary relief of joint pain similar to Deca.

There is some confusion on the technical name as the same ingredient is being identified by many different technical names, including:
17a-methyl-4 hydroxy nandrolone
4-Hydroxy- 17aMethyl-Hydroxyestra-a-4ene-3-one
17a-methyl-3-keto-19-norandrostene-4,17-diol
and more....

Dosage range
It seems as though from a user feedback perspective that many companies recommended dosages are too low. The dosage that most report to be effective falls between the 12 and 16mg range.

Typical Cycle Length
4 to 6 weeks

Description
MOHN is an active hormone and does not require conversion. It is a Nandrolone derivative, however the 4-OH group added inhibits a conversion to DHT (dihydrotestosterone) or DHN (dihydronandrolone) making this a mildly androgenic and highly anabolic compound.
Supplements with this ingredient:
None (for now)

Links to additional information on 17a-methyl-3-oxo-19-norandrostene-4, 17-diol (Oxavar)
New" PH: Oxavar - Thoughts? (Added on 11/29/2012)
Pro Steroid - Oxavar (M4OHN - MOHN) (Added on 11/29/2012)

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