Nandrolone Decanoate — Deca 500 by Dragon Pharma
Deca 500 is Dragon Pharma's high-concentration formulation of injectable Nandrolone Decanoate — the same active substance and ester as Deca 300, delivered at 500mg/ml instead of 300mg/ml. Each 10ml vial in Dragon Pharma's MCT oil carrier allows advanced users to reach higher weekly doses with reduced injection volume.
Also searched as: Nandrolone Decanoate 500mg, Deca Durabolin 500, Deca 500 Dragon Pharma, high-dose nandrolone.
What Is Deca 500?
Deca 500 contains Nandrolone Decanoate — the same long-ester 19-nor compound used in Deca 300 — at a higher 500mg/ml concentration. The pharmacology is identical to standard Nandrolone Decanoate: the Decanoate ester extends release over approximately 15 days, with the same anabolic activity, joint comfort associations and prolactin-related considerations as any other Nandrolone Decanoate product. The only practical difference between Deca 500 and Deca 300 is concentration — a given dose is delivered in a notably smaller injection volume at 500mg/ml.
Effects and Benefits
- Significant lean mass gains, often associated with steady, quality weight gain over an extended cycle
- Notable joint comfort benefits during high-volume training, linked to effects on collagen synthesis
- High concentration allows higher weekly doses without proportionally larger injection volumes
- Fewer total injections or smaller volumes required for the same weekly dose compared to Deca 300
- Long ester provides stable, sustained levels well suited to extended cycles
Dosage and Administration
| Experience Level | Typical Dose | Cycle Length |
|---|---|---|
| Advanced | 400–600 mg/week | 12–16 weeks |
| High-dose protocols | 600 mg/week and above | 12–16 weeks |
With the same ~15-day half-life as standard Nandrolone Decanoate, Deca 500 is dosed on the same weekly or twice-weekly schedule, with blood levels building gradually over the first several weeks. The practical advantage of the 500mg/ml concentration becomes apparent at higher weekly doses — for example, a 1000mg/week protocol requires 2ml total per week at 500mg/ml versus 3.3ml at 300mg/ml.
Side Effects
Deca 500 carries the same side effect profile as any Nandrolone Decanoate product — concentration does not change the pharmacology, only the dose-per-ml:
- Elevated prolactin from 19-nor activity — Cabergoline is commonly used to manage prolactin-related effects such as reduced libido
- Suppression of natural testosterone production — Post Cycle Therapy is required after the cycle
- The very long ester means Nandrolone remains detectable for an extended period after the last injection
- Increased post-injection discomfort at the injection site due to the higher concentration, more so than with 300mg/ml formulations
- Maintaining adequate testosterone alongside Deca is standard practice, regardless of concentration
Deca 500 vs Deca 300
Dragon Pharma offers Nandrolone Decanoate in two concentrations:
- Deca 500 (500mg/ml) — for advanced users running higher weekly doses who want to minimise injection volume
- Deca 300 (300mg/ml) — the standard concentration, suited to most users and easier to dose precisely at lower-to-moderate weekly amounts
The active substance and effects are identical between the two. Users running 200-400mg/week often find Deca 300 more practical for dose precision, while those running 600mg/week and above benefit from Deca 500's reduced injection volume and fewer total injections.
Building a Cycle Around Deca 500
As a high-concentration long-ester mass compound, Deca 500 pairs with:
- Enantat 400 for high-dose mass cycles requiring matched injection efficiency
- Dianabol 50 as an oral kickstart while Deca's long ester builds to effective levels
- Cabergoline to manage prolactin-related side effects from 19-nor activity
- Clomid or Nolvadex for Post Cycle Therapy
"Deca 500 is formulated to the same MCT oil standard as Deca 300, simply at a higher concentration. It gives advanced users the ability to run higher weekly doses without a proportional increase in injection volume."
Storage and Handling
Store Deca 500 at room temperature, away from direct sunlight and heat. Due to its higher concentration, warming the vial gently before drawing can help with viscosity and reduce injection discomfort. Use sterile technique for every draw.
