Halotestin (fluoxymesterone) is the most powerful steroid in tablets with anabolic and androgenic action. Produced in tablet form. Most often, the Halotest is used to increase training aggression, muscle density and strength without a large increase in muscle mass. Halotestin is popular among athletes who adhere to a certain weight category, as well as representatives of endurance sports (sprinters, crossfit). Fluoxymesterone is marketed under the trademarks Ultandren Ciba Grobbritanied, Husteron-Tabs Major USA, Ora-Testra Squibb Mark USA, Androyd Brown USA, Halotest ot Balkan (Moldova) and Halotestin Upjohn. Medically, the steroid has been used to treat delayed puberty, male hypogonadism, and breast cancer in women. To date, medicine has abandoned halotestin.


Steroid profile of Halotestin

  • Anabolic effect – 1900% of testosterone.
  • Androgenic effect – 850% t of testosterone.
  • The level of conversion to estrogens – no aromatization.
  • The level of exposure to the liver is high toxicity.
  • The impact on the axis of the hypothalamus-pituitary-testicles is pronounced.
  • Release form – tablets, oral administration.
  • Duration of action – up to 9 hours.
  • Detection time on doping control – up to 2 months.

In terms of its chemical structure, halotestin shares similarities with methyltestosterone, but is approximately five times more potent than the latter.

Halotest is a chemically modified testosterone in three positions:

  • 9-fluoro group. Increasing the androgenic effect of the drug by reducing the reduction in the 5-alpha position (formation of dihydrotestosterone). The 9-fluoro group is found in small amounts in human blood. This active form of fluoxymesterone binds much stronger than testosterone to androgen receptors in muscle tissue and organs.
  • 11-beta-hydroxy group. Prevention of enzymatic conversion of the molecule through the addition of aromatic rings, i.e., prevention of conversion to estrogens. Also, the 11-beta-hydroxy group is credited with blocking prolactin and estrogen receptors, that is, preventing the occurrence of edema, excess body fat and gynecomastia.
  • 17 alpha methyl group. Prolongation of the half-life of the drug when administered orally, maintaining the concentration of the active substance in the blood and preventing destruction during the first passage through the liver.

The action of Halotestin

  • Increase in aggression.
  • Increasing the hardness and relief of the muscles.
  • A slight increase in muscle mass is possible (especially with prolonged use).
  • Stimulation of hemoglobin synthesis (increased endurance). Taking Fluoxymesterone helps to increase the oxygen mass of the blood. The body produces more red blood cells, more oxygen is delivered to the muscles. Productivity increases, acidification decreases.
  • Reduction of body fat. According to studies, Halotestin accelerates the oxidation of fatty acids in “fast” muscle fibers. True, weight loss is never the main goal of taking Fluoxymesterone due to its high toxicity. The effect is rather secondary.
The action of Halotestin

How to take Halotestin

How to take Halotest The course of Fluoxymesterone is most often used pointwise, just before the competition. The optimal dosage of the steroid is 10 milligrams per day, the limit is 20 mg. Halotestin is advisable to use for short-term aggression and speed-strength indicators. As for how to take Halotestin in combination with other AAS, there are no special instructions here. it is taken in conjunction with any form of testosterone. This steroid is not recommended for women.

Function and Features of Halotestin:

Structurally, Halotestin has an anabolic rating of 1900 and an androgenic rating of 850. All ratings are measured relative to pure testosterone, which is rated 100 in both categories. This means that Halo, as it is often called, has ratings that are almost unreasonable, but its anabolic rating is extremely misleading. Although it has a huge anabolic rating, its anabolic translation in humans seems to be close to zero. This steroid simply does not cause any noticeable anabolic effect and mainly acts due to androgenic activity.

Reception of Halotestin in sports is recommended only for men. Women are strongly discouraged because of the pronounced androgenicity, due to which the manifestation of the virilization effect is likely. This may be a change in physique according to the male type, an increase in the timbre of the voice, or, for example, facial and body hair.

The course of Halotestin for sports purposes usually lasts 2-4 or up to 6 weeks. The dosage of halotestin commonly used by athletes varies from 10 to 20 mg per day, the frequency of use during the course is on a daily basis. This frequency of administration is associated with a short period of activity of the drug – about 5-10 hours.

Halotestin has some extremely powerful effects, some of the most powerful of which are related to red blood cells. Halo has the ability to significantly increase hematocrit and hemoglobin levels, as well as red blood cell mass. It also acts through cells that are already committed to the erythropoietin response. These effects are largely responsible for the increased effects as well as the increased energy levels that the steroid can provide.

Halotestin also has a strong weight loss effect. The halo has the ability to regulate fatty acid oxidation in the liver as well as fast twitch muscle mitochondria. Thanks to these properties, as well as interaction with red blood cells, we have a steroid that can have a noticeable effect on aspects of visual conditioning in a person who is already quite thin.

It is important to add that the course of taking Halotestin can take place not only in solo. To perform certain tasks, the drug can be combined with other steroids to obtain optimal results. To increase strength and fat burning, for example, you can use a combination with stanozolol and testosterone propionate. If you want to use this AAS in conjunction to gain muscle mass, then you should pay attention to the combination with nandrolone or long-acting testosterone ester.

In conclusion: no instructions for use can give the recommendations and advice on taking this and other steroids that our consultants can share on the Forum. Here you can read descriptions of pharmacology in demand in sports and ask questions to a bodybuilding coach, sports doctor and other specialists.

How to take Halotestin?

Due to the specifics of the action, this androgenic steroid is popular mainly in such disciplines as: athletics, boxing and martial arts in general, hockey, strength and some other sports. The use in bodybuilding is controversial, since the drug does not lead to a pronounced set of muscle mass (for this task, there are safer and more effective steroid drugs to choose from).

How to take Halotestin?

Effects of Halotestin:

The effects of Halotestin, while extremely powerful, do not reflect what we would call a truly versatile anabolic steroid. This steroid has very specific uses and while it can be beneficial, the potential side effects make it unnecessary for most men. The main effects of Halotestin revolve around strength and aggression. The problem of aggression and anabolic steroids is often exaggerated, but in the case of Halo, it can really reinforce the aggressive nature. This, in turn, can make the athlete work harder and become even stronger. While this may increase aggression, there are some important things to keep in mind. Halotestin cannot change your personality, make you unable to distinguish between right and wrong, or change your decision-making process. This can make a person more aggressive, but what a person does with aggression determines whether it is right or wrong. Aggression in itself is not bad, it can be a very positive tool; what we do with aggression determines whether it is right or wrong. For a person who is naturally aggressive and angry, using Halotestin will make him more of an aggressive jerk. For a sane person, he will have more aggression to show himself in the gym or in competition.

With the promotion of strength and aggression, this makes Halotestin a popular steroid among powerlifters, strength athletes and short-term fighters. Several weeks of use before a competition is very common and strength gains can potentially be greater than any other anabolic steroid can provide. The same strength and aggression can be useful to a competitive bodybuilder a few weeks after the performance. The competitive bodybuilding diet is brutal and possibly the most difficult way to diet on Earth. Toward the end, most of them become severely depleted and find it very difficult to progress through the learning process. The addition of Halotestin over the past few weeks may help them get through this extremely difficult time. It will also give the person a tougher and more defined look; however, there is an important note. While Halo can greatly improve visually conditioned fitness, you have to be very lean and bodybuilding to get any benefit from it. Most steroid users will never see this level of weight loss and there will be no useful goal for them.

This pretty much sums up the effects of Halotestin in terms of positive effects. The steroid is not a mass building steroid and is not used as a primary steroid in any cycle. This is a short-term steroid that brings certain benefits for certain purposes. In therapeutic settings, although it is allowed for some treatment points, it has become extremely rare.

Side effects

Halotestin is not a devastating steroid when it comes to potential side effects, there are far worse compounds out there. However, this compound is not extremely user-friendly, especially considering its hepatotoxicity and potential effects on cardiovascular health. For this reason, most will need to stay away from the complex. Halotestin can be used without problems, but it will require some effort and is largely non-guaranteed based on its limited uses. To understand Halotestin side effects and what you can do to ensure protection, we have divided them into separate categories along with everything you need to know.

Side effects


Although Halotestin is an anabolic steroid derived from testosterone, it does not aromatize and does not cause estrogen related side effects. With this steroid, water retention and gynecomastia are impossible. Simultaneous use of an antiestrogen with Halotestin will not benefit. An antiestrogen may be required depending on other compounds in the cycle, but this is not necessary due to the use of Halotestin.


Halo is an extremely androgenic steroid and as a result the side effects of Halotestin can be highly androgenic in nature. This may include acne, accelerated hair loss in individuals prone to male pattern baldness, and body hair growth. While such effects are highly dependent on individual response and genetic predisposition, the androgenic power of Halo greatly increases the odds. This power is so great that some studies have shown that fluoxymesterone can actually increase the size of the phallus.

Due to its extreme androgenic nature, the side effects of Halotestin can be very severe in women, causing severe virilization symptoms. Virilization symptoms include growth of body hair, deepening of the vocal cords, and enlargement of the clitoris. The effect is so great that it will be impossible for most women to avoid virilization. The only time Halo could be recommended to women was in the treatment of androgen-sensitive inoperable breast cancer. This steroid has no place in the training cycles of female athletes.


Halotestin can have a strong negative effect on the cardiovascular system, especially in regards to cholesterol control. This may include a significant increase in LDL cholesterol and a significant suppression of HDL cholesterol. This is largely due to its hepatic nature based on its resistance to the liver. Halotestin can also lead to high blood pressure and adversely affect triglyceride levels. Such problems in the long term can lead to left ventricular hypertrophy. Due to the negative effects of Halo on the cardiovascular system, prolonged exposure may increase the risk of cardiovascular disease.


Side effects of Halotestin include natural testosterone suppression and it will be very strong. However, the reason for the suppression of this steroid remains a mystery due to the inconsistent suppression of gonadotropins. Despite this, it significantly suppresses natural testosterone production, making the inclusion of exogenous testosterone essential for most men. Those who do not take exogenous testosterone therapy fall into a low testosterone state. This will occur regardless of genetic superiority and may be accompanied by many unpleasant symptoms. Regardless of the severity of the symptoms, low testosterone is a highly unhealthy condition. Those who include exogenous testosterone avoid this low level. The form of testosterone you choose does not matter.


Halotestin is a C17-alpha-alkylated (C17-aa) anabolic steroid that indicates a structural change at the 17-carbon position. In particular, this refers to the added methyl group at the 17th carbon position, which protects the hormone when taken orally. Although the hormone is essential for survival, it is unfortunately toxic in nature. Of all the C17-aa oral anabolic steroids, Halotestin has one of the strongest hepatotoxic properties. Liver enzyme levels will increase with the use of this steroid, and more than likely significantly. An increase in liver enzymes does not mean damage, but is an indicator of stress and can be a strong indicator of impending damage.