For the first time, Trenbolone acetate was thoroughly studied in 1967, and during a series of experiments with synthetic anabolic steroids, this steroid was described by Roussel-UCLAF. By the beginning of the 1970s, trenbolone acetate was sold in the U.K. by Hoechst under the trade name Finajet and also by Roussel in France under the name of Finaject.

Trenbolone - is a very powerful steroid that has never been permitted by the Office of the US Food and Drug Administration (FDA) for using by people. Initially the drug was used in veterinary medicine as injection under the skin of cattle.

Chemical structure

Trenbolone has similar features as nandrolone, a popular steroid often used by people.  Both of them are the 19-nor steroids, which means that the testosterone molecule was modified at the 19th position to give people a completely new compound. However, Trenbolone is slightly different; it is a drug for mass impact on the muscles. Thus, it may help to add muscle mass with minimal fluid retention. Its anabolic range is 500, while the testosterone anabolic range is only 100.


  1. Activity of substance: 10 days
  2. Classification: Steroid of anabolic / androgenic origin
  3. Type: injection
  4. Dosage: Men - from 100 to 300 mg per week. / Women - not recommended
  5. Acne: Yes
  6. Fluid retention: No
  7. High Blood Pressure: Yes
  8. Hepatotoxicity: no
  9. Aromatase: No
  10. Progestogenic activity: present
  11. DHT (dihydrotestosterone) conversion: yes
  12. Decrease of HPTA function (testosterone production): Yes
  13. Anabolic activity (400%) / androgenic activity (200%)
  14. Detection time - 6-7 weeks


  • An increase of muscle mass (up to 10 kg (20 lbs) for a 8-week course of trenbolone)
  • Increasing of strength
  • Increasing of the level of IGF by 200%
  • Trenbolone promotes fat loss, both independently and by stimulating the secretion of growth hormone
  • Increasing of libido on the course duration and a significant reduction after the course (if you are not using clomid and gonadotropin)
  • Increasing of cortisol level

Side effects

  • Most often, during the course of trenbolone there is a possibility of side effects: insomnia, high blood pressure, increased aggression, acne, alopecia, increased oiliness of the skin, and others.
  • Decreased libido, flaccid erection (very often during the course), testicular atrophy because of a significant suppression of testosterone production. Preventive maintenance is carried out by injection of a gonadotropin (for the beginning - 2 weeks of the course, and until the end of the course) and cabergoline.
  • A toxic effect on kidneys is absent. This side effect of trenbolone is a consequence of the fact that during the course the urine is stained red by derivable metabolites and it is mistakenly understood by some athletes as a sign of the lesion of kidneys.
  •  In moderate doses, a toxic effect on the liver has not been proven.
  • The androgenic effects are rare, the estrogen effects are almost always absent.
  • The risk of undesirable reactions increases if you combine trenbolone with Clenbuterol or Ephedrine.

Dosages and Uses

Dosages: from 100-150, alternating day dosing is recommended, and up to 200 per day before a competition.

The frequency of dosing: alternate day dosing, in rare cases – daily.

Parabolan Balkan is available in 1 ml ampoules, the concentration of the active substance - 100 mg / ml.  Ether, on which the hormone - Hexahydrobenzylcarbonate (trenbolone hexahydrobenzylcarbonate) is planted, has a validity period of up to 14 days, and it depends on the individual characteristics of athlete.

An effective Parabolan dosage varies from 100 to 500 mg per week. Amateurs should not inject more than 200 mg / week, 1 injection per week. During precompetitive preparation, experienced athletes prefer to inject Parabolan more often - 2-3 times a week.

Cycles (Courses)

The course for the amateurs

  • Testosterone propionate, 100-150 mg, alternate day dosing,  6-8 weeks
  • Trenbolone acetate, 75-100 mg,   alternate day dosing, 6-8 weeks post-treatment therapy -  4 days after the last injection of propionate.

The course for more experienced athletes

  • Testosterone enanthate - 750 mg per week, 1-12 weeks
  • Trenbolone enanthate -  400 mg per week, 1-12 weeks
  • Winstrol - 50 mg daily, 8-14 weeks
  • Primobolan - 600 mg per week, 1-10 weeks
  • Testosterone propionate - 200 mg, 1-12 weeks, alternate day dosing
  • Trenbolone enanthate - 400 mg per week, 1-10 weeks

The course for highly experienced, before competitions

  • Testosterone propionate - 100-200 mg daily
  • Trenbolone acetate - 75-100 mg daily
  • Masteron -  400-600 mg per week
  • Winstrol - 50 mg daily
  • Primobolan - 600 mg per week
  • Halotestin - 10-20 mg daily

Combined courses

Although the course itself will provide a noticeable increase of mass and strength, to strengthen the effect further there are combinations with oxandrolone, Winstrol, stanozolol, methandienone, primoblanom, bolderone, oxymetholone and testosterone ethers. Parabolan is compatible with almost any of anabolic steroids (combination must be chosen, taking into account individual goals). At the end of the course, taking anti-estrogens is not required.