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Finasteride for bodybuilding

In this article we’ll discuss the role of finasteride in bodybuilding

Our body produces an enzyme called 5 – alpha – reductase. This enzyme converts Testosterone into the most powerful physiological androgen, Dihydrotestosterone. When this enzyme in normal quantities, then everything is fine, but when too much 5-alpha-reductase is produced, then steroid user begins to face such “unpleasant little things” as: baldness, increased hair growth, oily skin , excessive sweating (which smells like a real goat), acne, hyper-expressed libido and the most unpleasant thing – prostatic hypertrophy.

Finasteride is a specific, competitive inhibitor of 5 – alpha – reductase. When entering the blood plasma, it extremely quickly binds to this enzyme in the same way as Testosterone does, only in this case the conversion to DHT no longer occurs.

Actually, in the human body there are 2 types of 5 – alpha – reductase. The first is located mainly in the skin of the body and is dominant in the part of the head where hair grows. The second type is found in the tissues of the genital organs, the prostate.

So, Finasteride primarily has an affinity with the type 5 – alpha – reductase, which predominates in the genitals and the prostate gland. As for the type due to which AAS users are actively bald, then Proscar also interacts with him, but to a lesser extent.

Nevertheless, the competent use of Finasteride is really the only salvation for those whose conversion to Dihydrotestosterone exceeds reasonable limits. Therefore, this substance will at least partially stop losing hair on your head and slow down the growth of the prostate.

But first of all, you need to understand in the case of taking which specific AAS , it generally makes sense to take Finasteride. And there are actually quite a few of them, but they (with the exception of two) are the sales leaders:

  • Testosteron
  • Methandrostenolone
  • Nandrolone
  • Methyltestosterone
  • Fluoxymesterone (Halotest)

As everyone knows, if specifically, you weren’t happy to be born a pure mesomorph, then in relation to Bodybuilding and Powerlifting, any cycle without Testosterone is the road to nowhere (except perhaps the last 14-10 days of drying, when you decided to achieve direct peak dryness and muscle hardness).

With regards to Methandrostenolone, then you can do without it absolutely calmly, but for some reason most do not want to do without it. Nandrolone turns into Dihydronandrolone – a substance that is completely inert in activity both in muscles and in peripheral tissues (the same scalp and prostate), but then Dihydronandrolone can lead to a sharp disruption of neuro-muscular conduction, which on the one hand means a lack of growth muscles and strength (strength can finally fall), and on the other hand, it can provoke problems with erection. So here Finasteride is in the subject.

Methyltestosterone and Fluoxymesterone are the very exceptions discussed above. In general, it is completely pointless to suppress their androgenic side, because thanks to it they have the main effects, moreover, without conversion to DHT, they have strong androgenic activity. So there is only one piece of advice – to avoid.

The list of steroids that do not turn into DHT at all, or the degree of their conversion is scanty so much that it can be safely neglected. They do not possess noticeable androgenic activity by themselves:

  • Methenolone (Primobolan),
  • Boldenone,
  • Oxandrolone,
  • Oral Turinabol.

And finally, there is a list of steroids against which Finasteride is powerless and useless:

  • Trenbolone,
  • Oxymetholone,
  • Stanozolol,
  • Drostanolone,
  • Mesterolone (Proviron).

This article does not indicate specific schemes and doses for Finasteride, because firstly the article is not about this, and secondly, the plan should be selected individually for the person based on the results of blood tests and dosages of the AAS themselves.


Due to the ability of type II 5-alpha reductase inhibitors to suppress the conversion of testosterone to dihydrotestosterone, finasteride preparations can cause abnormalities in the development of the external genital organs in a male fetus if they are prescribed to pregnant women.

Women going to become pregnant or are pregnant should avoid contact with crushed or disintegrated finasteride tablets due to the potential for finasteride to enter the body and the subsequent potential risk to the male fetus. A small amount of finasteride has been detected in semen. In this regard, women who can potentially become pregnant or are pregnant should avoid contact with the sperm of patients taking finasteride.

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Anastrozole bodybuilding

Anastrozole is an aromatase inhibitor. In simple terms, it blocks functioning of aromatase enzyme, which is responsible for converting testosterone to estradiol. The drug is used during cycle with aromatizable anabolic steroids to reduce the negative effects of estrogen on the body.

Initially we should discuss the positive and negative effects of estrogen on the male body. Estrogens play an important role in various functions of the male and female body. The general health of the athlete and his results depend on these very functions.

Positive Effects of Estrogens:

  • play an important role in the immune system;
  • necessary in the nutrition of bone tissue;
  • have a positive effect on cholesterol levels;
  • necessary for the production of growth hormone (GH) and insulin-like growth factor (IGF);
  • play an important role in maintaining the “fluid balance” in the body at the proper level;
  • help to absorb glucose;
  • support sex drive.

Negative aspects of increased estrogen levels:

  • retain fluid in the body, swelling;
  • fatigue and increased muscle blockage during training;
  • acne that has not been previously observed;
  • the risk of prostate cancer increases;
  • blood clotting increases;
  • the risk of cardiovascular disease increases;
  • the risk of hypertension (high blood pressure) increases;
  • the risk of stroke increases;
  • cause gynecomastia (swelling and itching in the nipple area, breast enlargement);
  • decreased sexual desire;
  • female obesity;
  • extra sweating;
  • possible sleep disturbances;
  • can provoke hair loss;
  • possible disturbances in the work of the gastrointestinal tract.


With the help of aromatase inhibitors, the level of estrogens is controlled. The competent use of anastrozole allows not only to counteract aromatization, but also to simultaneously increase the level of free testosterone. If you follow the dosage regimen, the agent will be perfectly tolerated by the body, without any negative effects.

The drug Anastrozole was invented at the end of the last century, its original purpose – the treatment of breast cancer. The effectiveness of the drug in this area has been proven, this contributed to its popularity in sports when using anabolic steroids by athletes.

Anastrozole in bodybuilding is used when the athlete begins to use anabolic steroids, which prone to aromatization, such as testosterone and danabol. This steroids may cause gynecomastia. In simple terms, this is the growth of the mammary gland. That is why many athletes take anastrozole during steroid cycles.

It suppresses the enzyme, interfering with the destruction of testosterone and the production of estrogen. The main effect of anastrozole is:

  • prevention of fluid retention;
  • suppression of the production of female hormones;
  • stimulation of natural testosterone production;
  • prevention of testicular atrophy;
  • increased libido in men;
  • prevention of gynecomastia;
  • improving muscle tone;
  • an increase in the level of anabolic hormones in the blood;
  • prevention of hypertension.

To avoid serious side effects on the testosterone and danabol cycle, anastrozole should be used immediately. It is easier to prevent the development of serious diseases than to cure them.

Possible side effects of anastrozole

Any medicine has both positive effect and negative one. Problems can arise if the athlete exceeds the recommended dose or takes the drug for too long. For the normal functioning of the male body, estrogens are necessary. If you take anastrozole for a long time and uncontrollably on the cycle of anabolic steroids, the level of this hormone can reach critically low levels.

This can cause a number of side effects:

  • memory impairment,
  • apathy, drowsiness,
  • fatigue;
  • frequent mood swings up to depression;
  • violation of oxygen metabolism in tissues;
  • deterioration of blood clotting;
  • violation of the functionality of nerve cells;
  •  joint pain;
  • decreased bone strength (osteoporosis);
  • headache, dizziness;
  • decreased libido;
  • low sperm motility;
  • increase in blood cholesterol levels;
  • anemia, thromboembolism, thrombophlebitis;
  • skin rashes and itching;
  • thinning hair, baldness;
  • lack of appetite while gaining weight;
  • liver disease.

All this suggests that anastrozole in bodybuilding should be used with caution, blood counts should be monitored, and the recommendations of professionals should be followed.

How to use anastrozole on the cycle of anabolic steroids?

If you don’t use aromatizable steroids, then you probably won’t need the drug. And if you do steroid cycle with testosterone, then you cannot do without anastrozole.

It can be used even before the cycle of anabolic steroids in case your level of aromatization is increased, as can be seen from the analyzes. You do not need to take this drug at random. Anastrozole is also used during PCT to reduce the level of aromatization, if this occurs and is monitored by tests for Estradiol.

Anastrozole can be taken at any time of the day, but the maximum effect can be achieved when taken on an empty stomach. If you drink a medicine with plenty of water, it will be absorbed faster and penetrate into the bloodstream. When using testosterone, anastrozole is taken both on different days and every day, it all depends on your level of aromatization, which proceeds differently for everyone due to individual characteristics, as well as depending on the dosage of testosterone and its ester.

You should take Anastrozole during the whole period of steroid action. For example, when using testosterone propionate, anastrozole must be taken up to the fifth day after the last injection. And after long estered testosterones (enanthate, decanoate, cypionate, sustanon, etc.), anastrozole has to be taken for the third week after the last injection, and sometimes longer.

If you take steroids with a short half-life (methandrostenolone), then start taking anastrozole with a lower dosage and frequency (0.5 mg three times a week or every other day). After 15-20 days of administration, the blood test should be repeated.

When using testosterone propionate, for example, 100 mg. / every other day, the dosage of anastrozole can be 0.5 mg every other day, or every day 0.5 mg, or 1 mg every day, and the last intake of anastrozole should be on the fifth day after the last injections.

If you are using long-ester steroids, then start taking anastrozole few days after the first injection, and after two to three weeks check with the aim of adjusting the dosage, and the subsequent recheck should be done at least once a month.

It is important to carefully monitor your body in order to timely determine the imbalances in the hormonal background and timely prevent the occurrence of side effects, changing the frequency of taking accompanying drugs, up to their cancellation.


During post-cycle therapy, anastrozole is not used if the level of aromatization is not rises above the permissible values. It is not permissible to replace anastrozole with tamoxifen, since they have mutually exclusive effect.