Nandrolone (phenylpropionate / other esters)
Muscle & Strength · Injectable 19-nor steroid
Tier C+
High-risk evidence profile
Bottom line
Read Off Label grades Nandrolone (phenylpropionate / other esters) as C+ (5.6/10) based on strong evidence, high benefit magnitude, and a high-risk safety profile.
Its high-risk evidence profile reflects a Safety score of 2/10; reported benefits and harms can differ by indication, dose, route, duration, and population.
The shorter ester produces a shorter washout period than decanoate and is reported in nonmedical use.
Studied, labeled, or reported-use context: NPP illicit: 100-200 mg IM every other day — Schedule III US; banned sport; not individualized guidance.
What the evidence says
The shorter ester produces a shorter washout period than decanoate and is reported in nonmedical use. Same long detection as parent nandrolone. Classical post-war clinical use as Durabolin.
Mechanism
Same parent as Deca but with shorter esters (NPP = phenylpropionate, ~4-5 day half-life); allows more stable blood levels and faster clearance if side effects emerge
Studied, labeled, or reported dose & route
NPP illicit: 100-200 mg IM every other day
This records doses and routes described in studies, approved labeling, clinical practice, or documented use. It is not individualized guidance and does not establish safety; context changes with indication, formulation, health history, monitoring, and other medicines.
Citations
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Common questions
- What does the evidence show about Nandrolone (phenylpropionate / other esters)'s effects?
- Read Off Label rates the evidence for Nandrolone (phenylpropionate / other esters) as Strong and the benefit magnitude as high, producing an overall grade of C+ (5.6/10). The shorter ester produces a shorter washout period than decanoate and is reported in nonmedical use.
- What safety findings are reported for Nandrolone (phenylpropionate / other esters)?
- Nandrolone (phenylpropionate / other esters) has a high risk profile in the database. High (same side effect profile as Deca; slightly faster recoverability due to shorter ester) Legal status: Schedule III US; banned sport.
- What does the low Safety score for Nandrolone (phenylpropionate / other esters) represent?
- The Safety score is 2/10. It records the substantial harms described for one or more use contexts; the Benefit score, indication, dose, route, duration, population, and legal status remain separate parts of the evidence profile.
- What doses or routes are reported for Nandrolone (phenylpropionate / other esters)?
- NPP illicit: 100-200 mg IM every other day This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.
- How does Nandrolone (phenylpropionate / other esters) work?
- Same parent as Deca but with shorter esters (NPP = phenylpropionate, ~4-5 day half-life); allows more stable blood levels and faster clearance if side effects emerge
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.