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Zyvex Pharmaceuticals Deca and NPP - Nandrolone 300, 500 and 100
Zyvex Pharmaceuticals Deca and NPP - Nandrolone 300, 500 and 100
Zyvex Pharmaceuticals Deca and NPP - Nandrolone 300, 500 and 100
Zyvex Pharmaceuticals

Zyvex Pharmaceuticals Deca and NPP - Nandrolone 300, 500 and 100

Injection · 300 mg/ml · 10 ml

Out of stock
$52.00

Zyvex Pharmaceuticals Deca and NPP is the nandrolone line in three concentrations, from a slow decanoate ester to a fast phenylpropionate. Available for purchase in the following variants: Deca 300, Deca 500 and NPP 100.

Supplied in sealed 10 ml vials. GMP-manufactured, each batch HPLC-verified with the Certificate of Analysis on file. Nandrolone vials for sale with international shipping with a 4 to 10 day transit window.

Discreet plain packaging
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Product overview

Zyvex Pharmaceuticals Deca and NPP - Nandrolone Vial Line

Zyvex Pharmaceuticals Deca and NPP is a three-vial nandrolone line that covers the slow and the fast end of the same 19-nor hormone: Deca 300 and Deca 500 as decanoate esters and NPP 100 as phenylpropionate. Buy nandrolone in the concentration that matches the volume you are willing to inject, and use the table below to see how much the ester changes the schedule. Every vial is GMP-manufactured and HPLC-verified, with a Certificate of Analysis held for the batch.

  • Three formulations - Deca 300, Deca 500, NPP 100
  • GMP-manufactured - pharmaceutical-grade production standards
  • HPLC-verified - independent lab testing with COA per batch
  • international shipping with a 4 to 10 day transit window

How Nandrolone Works

Nandrolone is a 19-nor androgen, meaning it lacks the carbon that testosterone carries at position 19, and that single change makes it aromatise at only a fraction of testosterone while adding moderate progestogenic activity. The result is a compound used for steady, quality mass gain with less water than a comparable testosterone dose, and the long ester is often chosen for the joint comfort users report from about the fourth to sixth week. Prolactin is worth watching when the dose climbs, and an aromatase inhibitor is not automatically part of the plan.

Variant Comparison

The three vials hold the same hormone; the ester and the concentration decide how often you inject and how much oil each shot carries.

Formulation Concentration Half-Life Inj. Frequency Typical Use
Nandrolone Decanoate 300 300 mg/ml About 6-12 days Once a week Long mass block
Nandrolone Decanoate 500 500 mg/ml About 6-12 days Once a week, small volume High-dose, low-volume
Nandrolone Phenylpropionate 100 100 mg/ml Short, days Every other day Short block, quick clearance

Choosing the Right Formulation

Deca 300 is the classic long ester for a ten to twelve week mass phase and is normally run beside a testosterone base such as the Zyvex Testosterone line. Deca 500 delivers the same weekly milligram count in a much smaller injected volume, which matters when a weekly total is split across two compounds. NPP 100 is the phenylpropionate version: it clears in days rather than weeks, so it suits a shorter block or a step down at the end of a longer one, and it is often paired with an injectable that also clears fast, such as the Zyvex Equipoise line or the short ester in Propionate 100.

Quality & Authenticity

Each batch is produced under GMP conditions and tested by third-party HPLC, with the Certificate of Analysis held for the batch. Store the vials upright at room temperature, away from light, heat and moisture, and check for any cloudiness or crash before use.

For laboratory research only. Consult a healthcare professional before use.

Specifications

BrandZyvex Pharmaceuticals
Active SubstanceNandrolone decanoate and phenylpropionate
FormulationsDeca 300, Deca 500, NPP 100
Concentration100-500 mg/ml
FormInjectable, oil-based
Vial Size10 ml multi-dose
AdministrationIntramuscular injection
Drug ClassInjectable 19-nor anabolic androgenic steroid
ManufacturingGMP-certified
TestingThird-party HPLC per batch
StorageRoom temperature, away from light, heat and moisture
ShippingInternational, 4-10 days transit

Stacks

Deca 300 With a Testosterone Base

Deca 300 once a week for ten to twelve weeks beside Zyvex Testosterone Enanthate 250 twice a week, which is the arrangement most long nandrolone blocks follow.

Outcome: steady mass gain with less water than testosterone alone.

PCT: required - start Nolvadex four weeks after the last decanoate injection, not before.

NPP 100 in a Short Block

NPP 100 injected every other day for six weeks with a short-testosterone ester from the Testosterone Propionate 100 vial.

Outcome: two short esters leaving together, so the tail is quick.

PCT: begins within days of the last injection, once clearance allows.

Deca 500 When Volume Is the Limit

Deca 500 once a week keeps the injected volume small when a weekly total is split between two compounds, with Nolvadex and Clomid kept on hand for the recovery phase.

Outcome: the same milligrams in less oil, but a thicker solution.

Consult a healthcare professional before any cycle. Dose figures are common community protocols.

FAQ

Before you ask

Questions, answered

It is the nandrolone line from Zyvex Pharmaceuticals with three vials: Deca 300 and Deca 500, both nandrolone decanoate, and NPP 100, which is nandrolone phenylpropionate. The decanoate vials release slowly over weeks and the phenylpropionate vial clears in days, so the three options cover a long mass block and a short block with the same hormone.

Deca 300 and Deca 500 carry the same decanoate ester at different concentrations, so the difference is how much oil one injection requires, not how long it lasts. NPP 100 is a different ester: phenylpropionate, much shorter than decanoate, injected every other day and out of the system in days. Choose by schedule first and by volume second.

The decanoate ester has an elimination half-life of roughly six to twelve days after intramuscular injection, which is why it is pinned once a week. The phenylpropionate ester is much shorter: vendor references put the active life at two to three days and third-party references closer to four and a half, so the checked sources disagree on the exact number and none is quoted as firm here.

Nandrolone suppresses natural testosterone production, and because it aromatises at only a fraction of testosterone, breast tenderness is less common but still possible. It carries moderate progestogenic activity, so prolactin and libido are worth tracking, and it is not converted to DHT, which is why hair loss is less of a theme than with testosterone. Bloodwork is the only reliable way to see how an individual responds.

Nandrolone metabolites are famous for a long detection window: the checked source file records urine detection of twelve to eighteen months for the class, with a single injection detectable for nine to eighteen months. The shorter ester is reported to clear faster, but the sources do not agree on an exact figure, so no number is claimed for NPP. This is why nandrolone is unsuitable for anyone subject to testing.

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