Nandrolone Decanoate 250 mg/ml ZPHC (10 × 1 ml Ampoules)

Nandrolone Decanoate from ZPHC (Zhengzhou Pharmaceutical Co., Ltd.) is a long-acting injectable anabolic steroid containing the active substance nandrolone. It is commonly used in bodybuilding and strength sports to support muscle growth, strength development, and recovery. Each ampoule contains 250 mg/ml, making it a standard and convenient dosage form for structured cycles.

Nandrolone Decanoate is known for its slow release and long duration of action due to its decanoate ester, which allows the compound to remain active in the body for an extended period after injection. It is widely recognized for its strong anabolic effects combined with relatively low androgenic activity.

Steroid Profile

Anabolic activity: 150% of testosterone
Androgenic activity: 30% of testosterone
Half-life: 6–7 days
Duration of action: up to ~15 days
Aromatization: low
Liver toxicity: none (injectable form)

Key Characteristics

Nandrolone Decanoate is a long-ester anabolic steroid that provides gradual and sustained effects. It promotes muscle growth through enhanced protein synthesis and nitrogen retention while generally producing fewer androgenic side effects compared to testosterone.

Effects and Benefits

• Promotes steady increases in lean muscle mass
• Improves strength and training performance
• Enhances protein synthesis and nitrogen balance
• Supports recovery after intense workouts
• May improve joint comfort through increased collagen synthesis
• Helps maintain muscle during calorie-restricted phases

Advantages of ZPHC Ampoules

• Pre-measured dosage for accuracy (250 mg/ml)
• High sterility due to sealed single-use ampoules
• Easy storage and transport
• Reduced dosing errors compared to multi-use vials

General Use Information

Typical usage ranges in performance contexts:

• 200–400 mg per week for men
• 8–12 week cycle duration
• Often combined with testosterone to maintain hormonal balance

Because it suppresses natural testosterone production, post-cycle therapy (PCT) is commonly used after discontinuation.

Common Combinations (Performance Context)

• Testosterone enanthate for mass gain cycles
• Oral anabolic steroids for increased anabolic effect
• Stanozolol or other compounds for cutting-oriented phases
• Boldenone in longer, steady mass cycles

Benefits in Training Context

• Gradual, quality muscle gains
• Reduced joint discomfort during heavy training
• Improved recovery and training capacity
• Stable and sustained anabolic environment

Possible Side Effects

• Suppression of natural testosterone production
• Reduced libido or erectile dysfunction in some users
• Acne and oily skin
• Water retention (mild in most cases)
• Mood changes
• Cardiovascular strain (cholesterol and blood pressure changes)
• Possible prolactin-related effects in some individuals