Description
Trenbolone Hexahydrobenzylcarbonate is a long-ester form of trenbolone, known for its exceptional anabolic and androgenic potency. Originally sold under the brand name Parabolan, it was the only pharmaceutical-grade trenbolone ever approved for human use. The hexahydrobenzylcarbonate ester provides a slow, steady release of the active hormone, delivering powerful muscle gains, extreme hardness, and nutrient partitioning without water retention. This makes it a preferred choice for advanced athletes seeking dramatic physique changes in cutting or lean bulking cycles.
76.5 mg per ampule dosing for Trenbolone Hexahydrobenzylcarbonate comes from the original pharmaceutical formulation of Parabolan by Negma Laboratories in France.
It’s because the ester adds extra molecular weight to the compound, but that extra weight doesn’t have anabolic activity — only the trenbolone base part does.
Reason for 76.5 mg dosage
- The original Parabolan ampules contained 76.5 mg of trenbolone hexahydrobenzylcarbonate, which is equivalent to 50 mg of active trenbolone base after accounting for the ester weight.
- The hexahydrobenzylcarbonate ester is relatively heavy — it makes up a significant part of the total molecular weight, so the “mg” on the vial reflects compound + ester, not just active hormone.
- Pharmaceutical companies often design doses in terms of active hormone content, and this format made it easy for doctors to administer precise weekly amounts (e.g., 1 ampule every 7–10 days).
Dosage (non-medical bodybuilding use):
- Typical range: 200–400 mg per week
- Injection frequency: 1–2 times per week due to ~7–10 day half-life
- Cycle length: 6–10 weeks
- Often stacked with testosterone and non-aromatizing compounds for best results
Side Effects:
- Night sweats, insomnia, increased aggression
- Cardiovascular strain (elevated blood pressure, adverse cholesterol changes)
- Possible prolactin-related issues (libido changes, gyno in sensitive users)
- Suppression of natural testosterone — full PCT required
- No estrogenic water retention but androgenic effects (acne, hair loss) possible
Note: This compound is for advanced users due to its potency and side effect profile. Strict health monitoring and proper PCT planning are essential.
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