Nandrolone vs PT-141
FDA Approved vs FDA Approved
monitor Mechanism-based · 60% Both Nandrolone and PT-141 can raise blood pressure. Monitor BP regularly and consider adding cardiovascular support (cardarine, telmisartan, or similar).
Molecular Data
Nandrolone PT-141
Weight 274.40 Da (base) —
Half-life ~6-12 days (decanoate) ~2.7 hours
Type 19-nortestosterone steroid (C18H26O2) Melanocortin receptor agonist
Key Benefits
Nandrolone
01 Significant increases in lean muscle mass with a favorable anabolic-to-androgenic ratio
02 Enhanced collagen synthesis and joint lubrication, reducing joint pain and improving connective tissue integrity
03 Increased bone mineral density through direct osteoblast stimulation
04 Improved nitrogen retention and protein synthesis for accelerated recovery
05 Stimulation of erythropoietin production, increasing red blood cell mass and oxygen delivery
06 Lower androgenic side effects (hair loss, acne, prostate enlargement) compared to testosterone
07 Clinically demonstrated efficacy in treating anemia of chronic renal failure
08 Potential neuroprotective properties observed in preclinical research
PT-141
01 FDA-approved pharmaceutical route
02 Predictable absorption profile
03 Effective for both male and female sexual dysfunction
04 Works within 45 minutes
05 Effective in PDE5 inhibitor-resistant cases
06 Central mechanism (not dependent on blood flow)
Dosing Protocols
Nandrolone
100-200 mg/week (therapeutic) / 1x per week (decanoate) or 2-3x per week (NPP)
TRT Adjunct - Joint Support 50-100 mg/week 1x per week (decanoate)
Therapeutic - Anemia / Wasting 100-200 mg/week 1x per week (decanoate)
Performance Enhancement - Moderate 200-400 mg/week 1x per week (decanoate) or split into 2 injections
NPP Protocol - Shorter Cycle 200-350 mg/week Every other day or 3x per week
PT-141
Women: 1.75mg (FDA-approved); Men: 1-2mg; Start 0.5mg test dose for tolerance / As needed before sexual activity; max 1 dose per 24 hours
Female HSDD (FDA-approved) 1.75mg As needed, max 1 dose/24hr
Male Erectile Dysfunction 1-2mg As needed, 45-60min before activity
Female Arousal Disorder 0.75-1.25mg As needed, max 1 dose/24hr
Low Starting Dose 0.5mg Test dose for tolerance assessment
Side Effects
Nandrolone
Suppression of natural testosterone production (profoundly suppressive, more so than testosterone alone)
Water retention and bloating (less than testosterone at equianabolic doses)
Erectile dysfunction and reduced libido without concurrent testosterone ('deca dick')
Increased appetite and weight gain
Mild acne and oily skin (less pronounced than testosterone)
Elevated hematocrit and hemoglobin (erythrocytosis)
Injection site pain or discomfort
Mild mood changes (some users report increased emotional sensitivity)
PT-141
Nausea (40%)
Flushing (20%)
Headache (11%)
Injection site reactions
Contraindications
Prostate cancer (active or history of hormone-sensitive prostate cancer)
Breast cancer in males or females
Pregnancy or potential for pregnancy (Category X - causes virilization of female fetus)
Nephrosis or the nephrotic phase of nephritis
Severe hepatic impairment
Hypercalcemia
Known hypersensitivity to nandrolone or any formulation components
Polycythemia (hematocrit above 54% at baseline)
Uncontrolled heart failure or severe cardiovascular disease
Uncontrolled hypertension
Cardiovascular disease
Use of nitrate medications
Pregnancy or breastfeeding
Research Evidence
Nandrolone PT-141
Status FDA Approved FDA Approved
References 5 studies 4 studies
Latest April 2005 2022
FDA Approved Yes Yes
This comparison is for educational and research purposes only. Consult a healthcare professional before use.