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COMPOUNDS / STEROID / NANDROLONE PHENYLPROPIONATE
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NANDROLONE PHENYLPROPIONATE

HIGH RISK
BEST FOR:Recovery●●●●●●○○○○6/10
NANDROLONE PHENYLPROPIONATE · NPP · DURABOLIN · NANDROLONE PHENPROPIONATE · NANDROLONE PHENYLPROPIONATE · 19-NORTESTOSTERONE PHENYLPROPIONATE · NANDROLONE PHENYPROPIONATE
Anabolic SteroidNandrolone EsterInjectableAndrogenicPerformance Enhancement

Fast-acting nandrolone ester used for muscle growth, recovery, and bone density; shorter half-life than nandrolone decanoate.

ROUTE / DOSAGE
LOW25mg
STANDARD50-100mg
HIGH150mg+
Note: Less common than IM; may cause more injection site irritation
CYCLE
Injected 2-3x per week cycles typically 8-12 weeks
BIOAVAILABILITY
~100% IM injection
ACTIVE DURATION
5-7 days (subjective)
STORAGE
Room temperature 15-25°C protect from light do not refrigerate or freeze oil-based solutions
HALF-LIFE
4-5 days (plasma)
DURATION BREAKDOWN
Total7-10 days
Onset24-48h
Come up2-4 days
Peak3-5 days
Offset3-5 days
After effects1-2 weeks
Duration varies by route, dose, and individual. Source: community reports.
§ 01 — EFFECTS
6 documented
Increased nitrogen retention
Enhanced protein synthesis
Improved muscle recovery
Increased bone density
Mild anti-inflammatory action
Erythropoiesis stimulation
§ 02 — RISKS
Suppression of endogenous testosterone production requiring PCT
Cardiovascular strain including dyslipidemia and LV hypertrophy
Hepatotoxicity with prolonged use
Virilization in women (deepening voice, hirsutism)
Estrogenic side effects including gynecomastia and water retention
Psychiatric effects including mood swings and aggression
§ 03 — INTERACTIONS
Interaction data not yet available for this compound.
§ 04 — SCIENCE

Nandrolone phenylpropionate (NPP) has been studied in animal models for its effects on protein metabolism, craniofacial growth, and anti-inflammatory activity. A Cochrane review identified one trial showing significant improvement in pain and function for patellofemoral pain syndrome with intramuscular NPP injections, though reviewers deemed it too controversial for clinical use. Early studies in rats demonstrated its hysterotropic and anabolic properties, with enhanced protein metabolism and muscle weight. Evidence in humans for performance enhancement is largely anecdotal, as controlled trials in athletic populations are ethically restricted. Cardiovascular, hepatic, and endocrine risks are well-documented from epidemiological and case-report data on anabolic steroid use.

§ 06 — SOURCES
[1]
PubMed PMID 34498880
pubmed.ncbi.nlm.nih.gov ↗
[2]
PubMed PMID 5101847
pubmed.ncbi.nlm.nih.gov ↗
[3]
PubMed PMID 14303256
pubmed.ncbi.nlm.nih.gov ↗
[4]
PubMed PMID 4054833
pubmed.ncbi.nlm.nih.gov ↗
[5]
PubMed PMID 6674140
pubmed.ncbi.nlm.nih.gov ↗
[6]
PubMed PMID 8021946
pubmed.ncbi.nlm.nih.gov ↗
[7]
PubMed PMID 4056644
pubmed.ncbi.nlm.nih.gov ↗
[8]
PubMed PMID 15266488
pubmed.ncbi.nlm.nih.gov ↗
Disclaimer. Protokol.wiki is an informational reference. Nothing on this site is medical advice. Compounds listed may be unapproved, unregulated, or illegal in your jurisdiction. Consult a licensed physician before use. Data compiled from peer-reviewed literature.
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