Trenbolone Hexahydrobenzylcarbonate (Parabolan) ZPHC – 100 mg/ml (10 × 1 ml Ampoules)

Trenbolone Hexahydrobenzylcarbonate, commonly known as Parabolan, from ZPHC is a long-acting injectable anabolic steroid used in bodybuilding and strength sports for powerful improvements in muscle growth, strength, and body composition. It is a long ester form of trenbolone that provides slow release and extended activity in the body.

Because of its long duration, it requires less frequent injections compared to shorter esters like trenbolone acetate, while still delivering strong anabolic effects.

Steroid Profile

Anabolic activity: ~500% of testosterone
Androgenic activity: ~500% of testosterone
Half-life: ~10 days
Aromatization: none (no estrogen conversion)
Hepatotoxicity: moderate with prolonged use
Release form: injectable

Key Characteristics

Parabolan provides strong anabolic activity with no estrogen conversion, meaning it does not cause water retention through aromatization. However, it still carries strong androgenic and progestogenic effects typical of trenbolone compounds.

Effects and Benefits

• Significant increase in lean, dry muscle mass
• Major strength improvements
• Enhanced fat loss and metabolic activity
• Increased muscle density and hardness
• Improved vascularity and definition
• No estrogen-related water retention

Advantages of ZPHC Ampoules

• 100 mg/ml pre-measured dosage
• Sterile single-use ampoules
• Long ester allows less frequent injections
• Stable and predictable release over time

General Use Information

Typical performance use:

• 100–200 mg every 5–7 days
• Cycle length: ~6–10 weeks

It is often combined with testosterone to maintain hormonal balance due to suppression of natural testosterone production.

Common Combinations

• Testosterone propionate or enanthate for hormonal support
• Masteron or Stanozolol for cutting and definition
• Boldenone or Primobolan for lean mass-focused cycles

Benefits in Training Context

• Dense, hard muscle development
• Strong fat loss support
• Improved strength and training performance
• Enhanced physique conditioning

 Side Effects

• Strong suppression of natural testosterone
• Mood changes, aggression, or irritability
• Insomnia and night sweats
• Increased blood pressure and cardiovascular strain
• Acne and oily skin
• Hair loss in genetically predisposed individuals
• Prolactin-related side effects in some users
• Possible stress on cardiovascular and renal systems