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Fluoxymesterone (Stenox)

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Stenox also known as Halotestin (fluoxymesterone), is a halogenated derivative of 17-alpha-methyltestosterone and has an extreme androgenic effect and a very slight anabolic effect. With this combination, a person can expect a great increase in muscle hardness and strength with no real gain in size or weight. Because of the very high androgenic effect, many athletes have reported high levels of aggression making their workouts extremely intense. A common dosage of Stenox is in the range of 20-30 mg which is between 8 and 12 tablets for a 4-6 week cycle. At this level an athlete can expect massive strength gains with a very low tendency of water and salt retention. Stenox is considered to be the most toxic oral steroid and has a high rate of side effect occurrences. This fact has kept most people, especially women, away from this compound. Stenox is also very hard on the liver and should never exceed 30 mg/day. Its strong androgenic characteristics have been commonly responsible for liver damage, headaches, irritability, aggressiveness, acne, gastrointestinal pain, virilization in women, and suppression of natural hormone levels.

Fluoxymesterone is the chemical name of active ingredient in Stenox. Stenox is a registered trademark of Atlantis, S.A. de C.V. in Mexico and/or other countries.

Stenox Resources

Stenox Pictures
Halotestin Prescribing Information

Stenox Pictures and Photographs

Fluoxymesterone Chemical Structure

Substance name

Fluoxymesterone [INN]
Chemical name

9-fluoro-11ß,17ß-dihydroxy-17a-methylandost-4-en-3-one

Systematic name (8S,9S,10S,11S,13S,14S,17S)-9-fluoro-11,17-dihydroxy-10,13,17-trimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one
Index name Androst-4-en-3-one, 9-fluoro-11,17-dihydroxy-17-methyl-, (11beta,17beta)-
CAS number 76-43-7
Merck Index Number Merck 11, 4113
Molecular formula C20-H29-F-O3
Molecular weight 336.441 g/mol
Bioavailability Oral: 100%
Metabolism Hepatic
Elimination half-life 9.5 hours
Excretion Urinary
Pregnancy category X
Legal status Prescription only (US); DEA Schedule III (US)
Routes of administration Oral

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