Deca Durabolin
$100.00
Decanosyn 250 (Nandrolone Decanoate)
Nandrolone is the base hormone, but it is better known under the trade name Deca Durabolin. Deca is one of the most well-known steroids in history ranging back to the 1960’s. Why is deca so popular? Because it’s a great addition to a cycle without increasing side effect’s.
10ml / 250mg
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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
| Week | Decanosyn (mg/week) | Testosterone (mg/week) | Support | Optional Add-On |
| 1–4 | 300 | 300 (Test E or Cyp) | NAC, Omega-3s | Anavar 40 mg/day |
| 5–8 | 400 | 400 | Aromasin 12.5 mg EOD | EQ or Primo |
| 9–12 | 400 | 400 | Cabergoline (optional) | Prepare for PCT |
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.
5 reviews for Deca Durabolin
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bigsexy1345 –
This product was extremely smooth and easy to inject! I’ve been using for years and this is the best Deca i’ve ever used! Strongly recommended
Snoooop –
Only Deca I’ll use! Thanks guys
Igor (verified owner) –
agree with the guys,very nice Deca! Thanks Syn Pharma.
Dallas3323 –
Legacy laboratories deca durabolin is very nice and legit!!!! Highly recommend
James A. (verified owner) –
High quality deca. Best I’ve used. Delivered in 2 days. Unreal. Thank you!!