Deca Durabolin

What is Decanosyn 250 (Nandrolone Decanoate) by SYN Pharma?

Decanosyn 250 by SYN Pharma contains Nandrolone Decanoate — the legendary injectable anabolic steroid known worldwide as Deca-Durabolin. First developed in the 1960s, this long-ester compound remains one of the most widely used and trusted anabolic agents for both performance enhancement and therapeutic applications.

Nandrolone is favored for its ability to provide steady muscle growth, joint relief, and recovery support with a very low rate of side effects. It does not convert to estrogen at high rates and is considered one of the most well-tolerated injectables for long cycles and offseason muscle-building stacks.

Benefits of Nandrolone Decanoate

• Promotes lean, quality muscle mass over time
• Increases nitrogen retention and protein synthesis
• Supports joint and connective tissue health
• Minimal androgenic and estrogenic side effects
• Ideal for bulking, therapeutic recovery, or long TRT-style protocols

Product Details

• Compound: Nandrolone Decanoate
• Strength: 250 mg/ml
• Volume: 10 ml vial
• Total Content: 2500 mg per bottle
• Half-life: 7–10 days (long-acting)
• Injection Frequency: 1–2 times per week

Recommended Usage

• Beginner Dose: 300–400 mg/week
• Intermediate: 400–600 mg/week
• Advanced: Up to 750 mg/week
• Cycle Duration: 10–12 weeks
• Aromatization: Mild — AI optional (Aromasin 12.5 mg EOD if needed)
• Prolactin Support: Cabergoline 0.25 mg 2x/week (if using with Tren or if symptoms arise)

12-Week Decanosyn Cycle Plan

Post Cycle Therapy (Recommended)

• Start: 14–21 days after last injection
• Clomid: 50/50/25/25 mg (Weeks 13–16)
• Nolvadex (optional): 40/40/20/20 mg

Common Questions About Decanosyn 250

Is Deca suitable for first cycles?

Yes. Nandrolone Decanoate is very beginner-friendly due to its low androgenic profile and supportive effects on joints and recovery. Always run it with testosterone as a base.

Will Deca cause water retention?

Minimal. It aromatizes less than testosterone and does not produce estrogenic bloating for most users, especially when controlled with a mild AI.

Can I run this during TRT?

Yes. Some users incorporate low-dose Deca (100–200 mg/week) into their TRT regimen for added joint and muscle support. Regular bloodwork is still advised.

What’s the difference between NPP and Deca?

NPP (phenylpropionate) is a short-ester version of nandrolone, requiring more frequent injections and kicking in faster. Deca (decanoate) is longer-acting and better suited for smoother, long-term cycles.