Fluoxymesterone (also known as Halotestin) is an effective oral anabolic steroid with strong androgenic activity, derived from methyltestosterone, which was first marketed by the American pharmaceutical company Upjohn in 1957 under the brand name "Halotestin". The clinical purpose of fluoxymesterone was originally the treatment of male hypogenitalism, delayed puberty in men, and breast neoplasms in women. This potent, non-aromatizable oral steroid exhibits extremely strong androgenic properties. This makes fluoxymesterone an excellent drug for strength gain, and the main effects observed with its use are increased strength, increased muscle density, and definition.
Fluoxymesterone is a C17-alpha-alkylated anabolic steroid, available orally, with a potent androgenic effect. More specifically, it is a derivative of methyltestosterone, differing by the addition of 11-beta-hydroxy and 9-alpha-fluoro groups. An interesting aspect of Halotestin use is the significant increase in erythropoiesis (red blood cell production) and the intensification of capillary network branching in muscles, which, as a result of improved blood flow, considerably increases strength and endurance. Fluoxymesterone is a very potent androgen that does not aromatize and does not convert to estradiol.
WARNING: Due to its C17-alpha alkylation, fluoxymesterone can cause significant stress to the liver. Therefore, adopting a healthy lifestyle and using supplements to promote liver health is recommended. When using fluoxymesterone, special attention should be paid to the liver, regularly checking liver enzyme levels. For this reason, the recommended duration of a Halotestin cycle should not exceed 6 weeks.
Chemical name 9-Fluoro-17α-methyl-11β,17β-dihydroxyandrost-4-en-3-one
Formula C20H29FO3
Anabolic activity index 1900%
androgenic activity index 850%
Fluoxymesterone (also known as Halotestin) is an effective oral anabolic steroid with strong androgenic activity, derived from methyltestosterone, which was first marketed by the American pharmaceutical company Upjohn in 1957 under the brand name "Halotestin". The clinical purpose of fluoxymesterone was originally the treatment of male hypogenitalism, delayed puberty in men, and breast neoplasms in women. This potent, non-aromatizable oral steroid exhibits extremely strong androgenic properties. This makes fluoxymesterone an excellent drug for strength gain, and the main effects observed with its use are increased strength, increased muscle density, and definition.
Fluoxymesterone is a C17-alpha-alkylated anabolic steroid, available orally, with a potent androgenic effect. More specifically, it is a derivative of methyltestosterone, differing by the addition of 11-beta-hydroxy and 9-alpha-fluoro groups. An interesting aspect of Halotestin use is the significant increase in erythropoiesis (red blood cell production) and the intensification of capillary network branching in muscles, which, as a result of improved blood flow, considerably increases strength and endurance. Fluoxymesterone is a very potent androgen that does not aromatize and does not convert to estradiol.
WARNING: Due to its C17-alpha alkylation, fluoxymesterone can cause significant stress to the liver. Therefore, adopting a healthy lifestyle and using supplements to promote liver health is recommended. When using fluoxymesterone, special attention should be paid to the liver, regularly checking liver enzyme levels. For this reason, the recommended duration of a Halotestin cycle should not exceed 6 weeks.
Chemical name 9-Fluoro-17α-methyl-11β,17β-dihydroxyandrost-4-en-3-one
Formula C20H29FO3
Anabolic activity index 1900%
androgenic activity index 850%