Parabolan is the brand name for Trenbolone Hexahydrobenzyl Carbonate, a long-acting ester variant of trenbolone.
This drug has a significantly longer half-life (approximately 14 days) than trenbolone acetate, resulting in fewer injections and more convenient use.
Trenbolone was first introduced in 1967 and was studied alongside trenbolone acetate and trenbolone undecenoate.
Parabolan was produced by the French laboratory Negma in the form of trenbolone hexa and was sold as a prescription drug until 1997.
Parabolan was primarily used to treat muscle wasting diseases, malnutrition, and osteoporosis; however, its potent androgenic properties could be problematic for certain patient groups.
Nevertheless, it was considered relatively safe for use in adult women or elderly patients.
After 1997, Parabolan was discontinued and is now mostly distributed as counterfeit products.
However, trenbolone-based steroids are under clinical research, and there is a possibility of their re-entry into the pharmaceutical market in the future.
Although trenbolone is not approved for human medicinal use today, it is still used in bodybuilding and for enhancing athletic performance, and its use must be approached with caution due to its powerful effects and potential side effects.
Chemical Properties of Parabolan
Parabolan is a modified form of trenbolone, a synthetic derivative of nandrolone, belonging to the 19-nor class of compounds, meaning it lacks the carbon atom at the 19th position.
Trenbolone is classified as a progestin, interacting with progesterone receptors in the body and exhibiting strong progestogenic activity.
Specifically, trenbolone forms double bonds at carbons 9 and 11, providing strong androgen receptor affinity and greater anabolic potency.
Trenbolone exhibits an anabolic strength five times more potent than testosterone and is resistant to the aromatase enzyme, so it does not convert into estrogen.
This results in trenbolone being completely immune to aromatization, differentiating it from nandrolone.
Furthermore, trenbolone has high resistance to metabolic breakdown in the body, allowing it to remain in its active form for longer, with most of it not being excreted in urine but remaining in its original form.
Parabolan is created by adding a hexahydrobenzylcarbonate ester to trenbolone, extending its half-life to approximately 14 days and slowing its release rate.
This ester bond only increases the hormone’s half-life and does not alter its pharmacological effects.
Characteristics of Parabolan
Parabolan is a highly versatile anabolic steroid for athletes and bodybuilders, being a powerful anabolic steroid that can maximize effects without requiring very high doses.
It boasts an anabolic strength five times that of testosterone, making it a suitable choice for bulking, strength enhancement, and increasing lean body mass.
Additionally, since it does not convert to estrogen, there is no water retention or bloating, completely avoiding the “puffy” look associated with aromatizing androgens like Dianabol.
With a proper diet and training regimen, Parabolan can effectively increase lean mass while strength improves rapidly.
Parabolan is also suitable for cutting and contest preparation, known as one of the most favored steroids among bodybuilders.
Referred to as “God’s Nectar,” it has established itself as an indispensable component in bodybuilding cycles.
The powerful nutrient partitioning effect of trenbolone rapidly reduces fat while in a clean caloric deficit, and the highly androgenic nature of Parabolan enhances muscle hardness and vascularity, helping bodybuilders achieve the desired “3D” look.
Prominent coaches emphasize that this characteristic makes trenbolone-based cycles have a powerful impact on bodybuilding outcomes, an effect that becomes even more pronounced when body fat is low.
When bodybuilders apply Parabolan in practice, following proper usage protocols and systematic programs can lead to achieving their ideal physique and performance results.
Parabolan References
[1] J. Mathieu, Proc.Intern. Symp. Drug Res. 1967, p 134. Chem.Inst. Can., Montreal, Canada.
[2] Tissue selectivity and potential clinical applications of trenbolone (17beta-hydroxyestra-4,9,11-trien-3-one): A potent anabolic steroid with reduced androgenic and estrogenic activity. Yarrow JF, McCoy SC, Borsa SE. Steroids. 2010 Jun;75(6):377-89. doi: 10.1016/j.steroids.2010.01.019. Epub 2010 Feb 4.
[3] Characterization of the affinity of different anabolics and synthetic hormones to the human androgen receptor, human sex hormone binding globulin and to the bovine progesterone receptor. Bauer, Meyer et al. Acta Pathol Microbiol Imunol Scand Suppl 108 (2000):838-46.
[4] Unique Steroid Congeners for Receptor Studies. Ojasoo, Raynaud. Cancer Research 38 (1978): 4186-98.
| Chemical Name | 17beta-Hydroxyestra-4,9,11-trien-3-one |
| Molecular Weight | 410.55 g/mol |
| Formula | C26H34O4 |
| Manufacturer | Negma Laboratories |
| Half-Life | 3 days (Acetate) 10 days (Enanthate) 14 days (Hexa) |
| Detection Time | 4-5 months |
| Anabolic Rating | 500 |
| Androgenic Rating | 500 |
