Hemi Pharma Nandrolone Phenylpropionate (NPP) 100mg

Hemi Pharma Nandrolone Phenylpropionate

Hemi Pharma Nandrolone Phenylpropionate, commonly known as NPP, is a short ester injectable steroid produced at 100mg per ml across a full 10ml vial. It is manufactured at our UK facility and carries a unique QR code on every vial, connected directly to our manufacturer database and confirming the batch number, compound, declared strength and date of manufacture before the seal is broken.

Product Specifications

Active Ingredient	Nandrolone Phenylpropionate
Common Name	NPP
Classification	Injectable Anabolic Androgenic Steroid (AAS)
Concentration	100mg per ml
Vial Size	10ml (1000mg total)
Active Half Life	4 to 5 days
Detection Time	1 to 2 months
Standard Dosage	200mg to 600mg per week
Aromatization	Low
Hepatotoxicity	Low
Anabolic Rating	125
Androgenic Rating	37

Batch Testing

Every batch of Hemi Pharma Nandrolone Phenylpropionate is submitted to Janoshik Analytical, an independent laboratory based in Prague, before entering the UK market. Janoshik uses HPLC and mass spectrometry to confirm compound identity and measure active concentration per ml. The full certificate is published on the lab results page and is independently verifiable at janoshik.com using the unique code printed on the document. We publish every result without curation, including any batch that comes in below declared concentration.

Why Buy Hemi Pharma Nandrolone Phenylpropionate

Every vial of Hemi Pharma Nandrolone Phenylpropionate comes directly from our own UK manufacturing facility. We do not source from third parties, import from overseas or supply through wholesalers. The Janoshik certificate for every batch is published before the product goes on sale. Read the exact concentration and batch number before you order, then verify it independently at janoshik.com after you receive your product.

How Nandrolone Phenylpropionate Works

NPP is a 19 nor anabolic steroid with the same parent compound as Deca Durabolin, but using the phenylpropionate ester instead of decanoate. This produces a much shorter half life of 4 to 5 days compared to the 6 to 8 day half life of decanoate, allowing more frequent dosing and faster clearance from the body if a cycle is discontinued.

Nandrolone increases collagen synthesis and improves nitrogen retention, which is why it is widely valued for joint comfort during heavy training. It carries a relatively low aromatization rate and converts to a weaker form of oestrogen than testosterone does, producing a more moderate estrogenic profile at equivalent doses.

Benefits

Nandrolone Phenylpropionate supports steady, quality muscle gain with a lower water retention profile than many bulking compounds. Joint comfort is one of the most frequently reported benefits, with users training through higher volumes reporting reduced joint pain during a cycle.

Because the phenylpropionate ester clears more quickly than decanoate, NPP allows for closer management of a cycle, with effects becoming noticeable sooner, typically within the first one to two weeks, compared to the four to six weeks often needed for decanoate based nandrolone to build to full effect.

Side Effects

Nandrolone carries a notable risk of progestational side effects including gynecomastia through a pathway not addressed by standard aromatase inhibitors. A dopamine agonist such as Cabergoline is sometimes used alongside nandrolone compounds to manage this risk, particularly at higher doses.

Androgenic side effects are generally mild relative to the anabolic effect. Suppression of natural testosterone production is significant on nandrolone compounds and a testosterone base is recommended throughout any nandrolone cycle to avoid deficiency symptoms commonly referred to as deca dick. Post cycle therapy is required after every cycle.

Contraindications. Do not use this product if you have prostate conditions, severe liver or kidney disease, or a history of cardiovascular issues. Consult a medical professional before use.

Cycle Guide

NPP has a half life of 4 to 5 days, making twice weekly injection suitable to maintain stable blood levels. At 100mg per ml, a 300mg per week dose requires 3ml per week split into two injections. A 400mg per week dose requires 4ml per week.

Standard performance doses range from 200mg to 600mg per week, typically run for 8 to 12 weeks alongside a testosterone base such as Hemi Pharma Testosterone Enanthate or Cypionate. A testosterone base is strongly recommended on every nandrolone cycle.

PCT After Nandrolone Phenylpropionate

PCT begins approximately 10 to 12 days after the last injection due to the 4 to 5 day half life of the phenylpropionate ester. A standard protocol uses Tamoxifen at 20mg per day and Clomiphene Citrate at 50mg per day for four weeks, dropping to 20mg Tamoxifen and 25mg Clomiphene for a further two weeks if needed.

Administration and Storage

Administer via intramuscular injection. Draw using a 21 to 23 gauge needle and inject using a 23 to 25 gauge needle. Warm the vial in your hands for 60 seconds before drawing to reduce viscosity. Common injection sites include the glutes, quads and ventrogluteal region. Store at room temperature in a cool dark cupboard away from direct sunlight. Do not refrigerate. Wipe the rubber stopper with an alcohol swab before every draw.

Frequently Asked Questions

What is the difference between NPP and Deca Durabolin?

Both contain Nandrolone as the active hormone. NPP uses the phenylpropionate ester, with a half life of 4 to 5 days, while Deca uses the decanoate ester, with a half life of 6 to 8 days. NPP clears the body faster and produces effects sooner, while Deca requires less frequent injection.

Has Hemi Pharma Nandrolone Phenylpropionate been independently tested?

Yes. Every batch is independently tested by Janoshik Analytical before UK market entry using HPLC and mass spectrometry. The full certificate is published on the lab results page and is independently verifiable at janoshik.com using the code printed on the document.

Why is a testosterone base recommended with NPP?

Nandrolone compounds suppress natural testosterone production significantly. Without a testosterone base, users often experience deficiency symptoms commonly referred to as deca dick, including reduced libido and erectile difficulty. Running a testosterone compound alongside NPP prevents this.

Does NPP help with joint pain?

Many users report improved joint comfort while using nandrolone compounds, attributed to increased collagen synthesis and improved fluid retention within the joints. This is one of the most commonly cited benefits of NPP among users training at high volume.

Does Nandrolone Phenylpropionate require post cycle therapy?

Yes. NPP suppresses natural testosterone production and requires post cycle therapy after every cycle. PCT begins approximately 10 to 12 days after the last injection due to the 4 to 5 day half life.

How quickly is Hemi Pharma Nandrolone Phenylpropionate delivered in the UK?

Orders placed before 2pm Monday to Friday are despatched the same day via Royal Mail Tracked 24 and delivered the next working day to UK addresses. Free UK shipping is available on orders over £100. All orders are shipped in plain outer packaging with no indication of contents.