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Fluoxymesterone (Halotestin) powder

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AASraw is the professional manufacturer of Fluoxymesterone (Halotestin) powder which has independent lab and large factory as support, all production will be carried out under CGMP regulation and trackable quality control system. The supply system is stable, both retail and wholesale orders are acceptable.

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Fluoxymesterone (Halotestin) powder video




I. Fluoxymesterone(Halotestin) powder basic Characters:

Product Name: Fluoxymesterone/Halotestin powder
CAS number: 76-43-7
Molecular Formula: C20H29FO3
Molecular Weight: 336.4
Melt Point: 265℃
Color: White powder
Storage Temp: RT

What Is Fluoxymesterone/Halotestin Powder?

Fluoxymesterone is a man-made form of testosterone, a naturally occurring sex hormone that is produced in a man’s testicles. Small amounts of testosterone are also produced in a woman’s ovaries and adrenal system.

Fluoxymesterone brand name is Halotestin. Halotestin is a synthetic androgen, or male hormone, similar to testosterone. Fluoxymesterone works by attaching itself to androgen receptors; this causes it to interact with the parts of the cell involved in the making of proteins. It may cause an increase in the synthesis of some proteins or a decrease in the synthesis of others. These proteins have a variety of effects, including blocking the growth of some types of breast cancer cells, stimulating cells that cause male sexual characteristics, and stimulating the production of red blood cells.

Fluoxymesterone is a white or nearly white, odorless, crystalline powder, melting at or about 240℃, with some decomposition. It is practically insoluble in water, sparingly soluble in alcohol, and slightly soluble in chloroform.

The chemical name for fluoxymesterone is androst-4-en-3-one, 9-fluoro-11,17- dihydroxy-17-methyl-, (11β,17β)-. The molecular formula is C20H29FO3 and the molecular weight 336.45.


How Does Fluoxymesterone/Halotestin Powder Work?

Hormones are chemical substances that are produced by glands in the body, which enter the bloodstream and cause effects in other tissues.  For example, the hormone testosterone, made in the testicles and is responsible for male characteristics such as deepening voice and increased body hair.  The use of hormone therapy to treat cancer is based on the observation that receptors for specific hormones that are needed for cell growth are on the surface of some tumor cells.  Hormone therapy can work by stopping the production of a certain hormone, blocking hormone receptors, or substituting chemically similar agents for the active hormone, which cannot be used by the tumor cell.  The different types of hormone therapies are categorized by their function and/or the type of hormone that is affected.

Fluoxymesterone is classified as an androgen.  Androgens are hormones such as testosterone and androsterone that produce or stimulate the development of male characteristics.  In women, these hormones can be converted into estrogen.  Androgens as cancer therapy are used to oppose the activity of estrogen, thereby slowing the growth of cancer.


Is Fluoxymesterone/Halotestin Anabolic Steroid?

Also commonly known as Fluoxymesterone, Halotestin is an androgenic anabolic steroid that can be taken orally by bodybuilders to encourage increased lean muscle mass. In the bodybuilding market, it comes in three sizes – 2mg, 5mg and 10mg – and contains a range of inactive ingredients including calcium stearate, corn starch, lactose, sorbic acid and tragacanth..etc

Halo is an extremely strong and potent anabolic steroid analogue, possessing an anabolic strength 19 times the strength of Testosterone, and an androgenic strength 8.5 times the strength of Testosterone. However, it has also been clarified that it has been determined to possess slightly less anabolic strength in humans in practicality. Athletes and bodybuilders should enjoy experiencing a vast increase in strength, lean muscle growth, and an increase in definition. Size increases have purported to be modest but not extreme.


What Does Fluoxymesterone/Halotestin Steroid Do?

In medical treatment use

Halotestin is the trade name of fluoxymesterone, which was synthesized in the 50s by Upjohn, and was later also manufactured by Ciba Pharmaceuticals under the name Ultandren.

Initially marketed for the treatment of clinical problems, for example, the loss of muscle mass, malnutrition, androgen deficiency problems, fracture healing and tissue repair in general, it was also used together with other medications which could have some side effect of this nature, such as corticosteroids.

In women and, of course, in very controlled doses, it has been used as an adjunct in the treatment of breast cancer, in menopause and outros problemas.


In bodybuilding use

In the bodybuilding world Halotestin is considered a very popular choice for power lifters and strength athletes; however, it is also a great hardener and cutter steroid for bodybuilders, although the side effects may make the benefits counter productive. The possible benefits and effects of Halotestin in building use are:


1) Strength and Energy

Greatly enhanced strength is the most important and desired effect of Halotestin and often the sole reason that a bodybuilder will choose to use it. The massive boost in strength and energy mainly comes from the effect of Halotestin on red blood cell function. This increased strength will help any athlete push performance to new levels, but with it comes increased aggression overall and this often makes it useful for powerlifters, fighters and others where aggressive strength might be a desirable trait.


2) Fat Loss

Although not a specific fat loss steroid or one with very powerful effects in this area, it can still contribute to the loss of fat but these effects will only really be seen if you are very lean already. Those who haven’t already lost a significant amount of body fat through previous cutting phases are unlikely to notice the fat loss effects of Halotestin.


3) Aggression and Drive

While this is often thought of as a negative side effect, increased aggression is also valued as a benefit by specific Halotestin users – most notably those who require the extra drive and energy for certain pursuits like fighting and powerlifting. As long as this increased aggression is put to positive use it is not seen as a problem by Halotestin users.

However those who are especially prone to existing mood or anger issues should take heed that this trait may worsen those existing tendencies in other aspects of life outside the competitive arena where it’s valued. Starting Halotestin at a low dose for first time users will allow you monitor its effects on your aggression levels and how well you cope with it. Doses can then be altered from there as needed.


4) Pre-contest

One of the few uses of Halotestin is during the pre-contest phase where the diet is extremely restricted and strict and where many people will struggle or fall before the final hurdle. Halotestin can provide the extra kick and energy needed to push through the toughest times just before a contest.

Competitors will also benefit from enhanced physical conditioning prior to a competition with definition and hardness receiving a boost. This is only of great benefits to those who are already very lean with some of the lowest body fat levels if you are to see the true power of Halotestin in this area. For the average bodybuilder this will not be possible but those who take physical conditioning to the highest level will value what Halotestin can contribute to this phase of contest preparation.


Fluoxymesterone/Halotestin Powder Dosage

For a performance increase, doses between 10mg-40mg per day are enough. With 10mg you can already achieve really different effects. However, for aesthetic purposes, especially extreme ones, this use needs to be a little higher, reaching around 40mg per day.

This is an oral steroid and it is recommended that it be taken on an empty stomach to improve its bioavailability.

Having a half-life of 6-8 hours, 3-4 daily doses of the total dose are required, that is, if you chose to use 40mg per day, you can take 10mg every 6 hours.

If this is your first time to use halotestin, you can start with doses between 5mg-20mg dailyin order to realize the effects of the anabolic on your body and your individual tolerance levels as well.

If you are preparing to undergo some kind of anti-doping test, it is worth considering that fluoxymesterone can be detected up to 2 months after the end of its use, that is, pay attention!


Halotestin vs. Nandrolone Deconate

While both are androgenic anabolic steroids with a similar chemical structure and a common goal of elevating testosterone levels, research suggests that nandrolone is potentially used to heal joints. It is used as a potential treatment for rotator cuff injuries.

It has also been proven that the prime target of action of nandrolone is skeletal muscle. It triggers the growth, which in turn minimizes the risk of developing metabolic syndrome.


Halotestin vs. Trenbolone

Perhaps trenbolone is one of the strongest steroids available in the market.

Trenbolone is used to increase appetite and muscle growth. Trenbolone works by increasing the uptake of glucose by the muscles. This results in optimal growth of the muscles leading to enhanced lean muscle mass.

Liver toxicity is one of the common side effects of both androgenic anabolic steroids.


Halotestin vs. Dianabol

Both the steroids work along similar lines as they enhance muscle growth, improve testosterone levels, and burn down fat.

Although Halotestin and Dianabol work by improving nitrogen balance, Dianabol aromatizes into estrogen, resulting in many unwanted side effects.


What Are The Side Effects Of Fluoxymesterone/Halotestin Powder?

As with all anabolic steroids, Fluoxymesterone is extremely hepatoxic (toxic to your liver) if taken in too high a dosage. Misuse/abuse of this hormone can trigger: heart disease, strokes, liver disease, mental/mood swings, and increased addiction/substance abuse. Hell, misuse can cause withdrawal symptoms – depression, irritability, and tiredness – for weeks/months after you stop.

But that is not all…

It can also cause all of the following – even if you’re careful and behave!


Nausea and vomiting


Oily skin/ acne

Baldness/hair loss

Increased/decreased libido (loss/boost in sex drive)

Change in skin color (cholestatic jaundice)

Alterations to liver function



Increased aggression/roid rage

Menstrual problems (in women)

Virilization (women) – deepening of voice, excess body hair and clitoral enlargement (this one isn’t always reversible once you stop – thanks but no thanks).


Erectile dysfunction

Painful/prolonged erections – 4 hours or more (rare)

Water retention – extra body water can increase your risk of heart failure (NOTE: look for signs of tiredness, hands/ankles/feet swelling and shortness of breath whilst lying down)

Hypersensitivity (skin)

Decreased blood glucose levels (in diabetic patients due to its metabolic effects)

Decreased T4 serum levels and increased resin uptake of T3 and T4 (thyroid hormones) – although there is no evidence of thyroid dysfunction.

Breast swelling

Problems urinating

Trouble sleeping/snoring

Decreased sperm production/reduced male fertility


If you experience persistent stomach pain/nausea, unusual tiredness, yellowing in your eyes and dark urine; then you must speak to your doctor straight away. Similarly, although it is rare to have a severe allergic reaction; if you see a rash, swelling (of your face, tongue, and throat); become dizzy or have trouble breathing, then seek medical attention immediately.



[1] Jerome Z. Litt; Neil Shear (17 December 2014). Litt’s Drug Eruptions and Reactions Manual, 19th Edition. CRC Press. pp. 177–. ISBN 978-1-84214-599-9.

[2] Saartok T, Dahlberg E, Gustafsson JA (1984). “Relative binding affinity of anabolic-androgenic steroids: comparison of the binding to the androgen receptors in skeletal muscle and in prostate, as well as to sex hormone-binding globulin”. Endocrinology. 114 (6): 2100–6. doi:10.1210/endo-114-6-2100. PMID 6539197.

[3] Kicman AT (2008). “Pharmacology of anabolic steroids”. Br. J. Pharmacol. 154 (3): 502–21. doi:10.1038/bjp.2008.165. PMC 2439524. PMID 18500378.

[4] J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 568–. ISBN 978-1-4757-2085-3.


III. Fluoxymesterone(Halotestin) powder HNMR


AASraw provides purity 99% Fluoxymesterone(Halotestin) powder raw powder to bodybuilders or underground labs for oral usage.