Trenbolone Hexahydrobenzylcarbonate (Parabolan)

Trenbolone Hexahydrobenzylcarbonate, commonly known by its former brand name Parabolan or sometimes Hexabolan, is a powerful synthetic Anabolic-Androgenic Steroid (AAS). It is an ester prodrug of the base steroid Trenbolone (also called trienolone or trienbolone).

Here is a detailed breakdown of the requested information:

Detailed Explanation and Different Names

• Chemical Nature: Trenbolone is an AAS belonging to the nandrolone group, structurally derived from nandrolone with two additional double bonds in its steroid nucleus. It is not approved for human use in most countries today, having been used primarily in veterinary medicine (as trenbolone acetate) to increase muscle growth and appetite in livestock.

• The Ester: Trenbolone Hexahydrobenzylcarbonate is an esterified version of trenbolone. The Hexahydrobenzylcarbonate ester is a relatively long-acting ester, meaning it is slowly released into the bloodstream after intramuscular injection, providing a sustained effect over a longer period compared to shorter esters like trenbolone acetate. The long half-life is what historically made it suitable for human clinical use before it was discontinued.

• Other Names:

  • Parabolan (Former original brand name for human use).

  • Hexabolan (Another former brand name).

  • Trenbolone Cyclohexylmethylcarbonate (Alternate chemical name for the ester).

  • Tren (Common slang term for trenbolone in general).

Anabolic and Androgenic Ratio

The anabolic and androgenic ratio is a measure of a steroid's relative potency, with testosterone serving as the reference (100:100).

• Anabolic-Androgenic Ratio: The base Trenbolone is often cited to have an approximate ratio of 500:500.

  • Anabolic Rating: 500

  • Androgenic Rating: 500

This indicates that Trenbolone is theoretically five times more potent than testosterone in both muscle-building (anabolic) and male characteristic-inducing (androgenic) effects. Note: These specific numerical ratings are derived from animal studies and are often debated in accuracy regarding human response, but they illustrate its extreme potency.

Benefits and Pros

The reported benefits, primarily from unapproved athletic use, stem from its high potency:

• Significant Muscle Mass Gain: Highly effective for rapidly building lean muscle mass.

• Increased Strength: Known for dramatic strength increases.

• No Estrogenic Activity (No Aromatization): Trenbolone does not convert to estrogen via the aromatase enzyme, which means users typically experience no estrogen-related side effects like water retention (bloating) or typical estrogen-induced gynecomastia (breast tissue growth from estrogen). This leads to a harder, more defined physique.

• Increased Nitrogen Retention: Promotes a strongly positive nitrogen balance, essential for muscle protein synthesis.

• Improved Nutrient Partitioning: Increases feed efficiency, meaning more of the calories consumed are utilized for muscle building rather than fat storage.

• Fat Loss: It is strongly androgenic and may directly promote lipolysis (fat breakdown).

Side Effects and Cons

Trenbolone is infamous for its harsh and varied side effects, often considered one of the most side-effect-prone AAS:

Sterogenic, Progestogenic, and Prolactin Effects

• Estrogenic Affects: None (Non-aromatizable). Trenbolone does not convert to estrogen.

• Progestogenic Affects: Potent. Trenbolone is a potent agonist of the progesterone receptor (PR). This progestogenic activity can directly cause or contribute to side effects.

• Prolactin Affects: Significant (Indirectly). Trenbolone's progestogenic nature can lead to an increase in Prolactin levels (Hyperprolactinemia), especially when used alone or in the absence of adequate anti-estrogen measures (even though Tren doesn't aromatize). Elevated prolactin, coupled with progestin, is the mechanism by which Trenbolone can cause gynecomastia (sometimes called "Progestin-induced gyno"), and it can also cause decreased libido and erectile dysfunction.

Half-Life and Detection Time

Dosage and Frequency

Note: Trenbolone is a controlled substance and its use for non-medical, performance-enhancing purposes is illegal in many jurisdictions and is strongly discouraged due to the severe health risks. The following information reflects typical, often high, dosages reported in unapproved athletic contexts, which is not medical advice.

• Dosage (Commonly Reported): 150 mg to 300 mg per week. Experienced users may report higher doses, but these dramatically increase the risk of adverse effects.

• Frequency: Due to its long half-life, it is typically injected once or twice per week to maintain stable blood concentrations. For example, 100 mg injected every 5 to 7 days.