CJC-1295 (without DAC) vs Masteron
Well Studied vs Moderate Research
synergistic Mechanism-based · 60% Masteron helps manage estrogen conversion from CJC-1295 (without DAC). This is a common and recommended combination. Adjust AI dose based on bloodwork — avoid crashing estrogen.
Molecular Data
CJC-1295 (without DAC) Masteron
Weight 3,367.97 Da 304.47 Da (base)
Half-life 30 minutes - 2 hours ~2 days (propionate), ~10 days (enanthate)
Chain 30 amino acids —
Type GHRH analog DHT-derived anabolic steroid (C20H32O2)
Key Benefits
CJC-1295 (without DAC)
01 Preserves natural GH pulsatility
02 Minimal side effects
03 No receptor desensitization
04 Precise GH release control
05 4x greater receptor affinity than native GHRH
Masteron
01 Produces a hard, dry, and grainy appearance by eliminating subcutaneous water retention
02 Mild anti-estrogenic properties that can reduce or replace the need for aromatase inhibitors on cycle
03 Does not aromatize, eliminating estrogen-mediated side effects from the compound itself
04 Enhances the visual effects of other steroids in a stack by reducing water retention and bloat
05 Modest increases in strength without significant weight gain, useful for weight-class athletes
06 Improves muscle density and vascularity at low body fat percentages
07 Well-tolerated with a relatively mild side effect profile compared to other anabolic steroids
08 Short detection window with propionate ester compared to many other injectable steroids
Dosing Protocols
CJC-1295 (without DAC)
100-300mcg per injection / 2-3 times daily (morning, post-workout optional, bedtime)
Anti-Aging/Wellness 100mcg 2x daily (morning and bedtime)
Body Composition 100-150mcg 3x daily (morning, post-workout, bedtime)
Maximum GH Release 200mcg 2-3x daily with GHRP
Sleep Enhancement 100-200mcg Once at bedtime
Masteron
300-500 mg/week / Every other day (propionate) or 2x per week (enanthate)
Cutting / Aesthetic Enhancement 300-400 mg/week Every other day (propionate) or 2x per week (enanthate)
Contest Preparation 400-500 mg/week Every other day or daily (propionate)
AI Replacement / Estrogen Management 200-300 mg/week Every other day (propionate) or 2x per week (enanthate)
Side Effects
CJC-1295 (without DAC)
Generally well-tolerated at recommended doses
Temporary facial flushing/warmth (5-10 minutes post-injection)
Masteron
Hair loss and accelerated male pattern baldness (significant risk as a DHT derivative - the most commonly reported side effect)
Acne and increased skin oiliness, particularly on the back and shoulders
Suppression of natural testosterone production (requires PCT or ongoing TRT)
Injection site pain or discomfort (more common with propionate ester)
Mild aggression or irritability from elevated androgenic activity
HDL cholesterol suppression and adverse lipid profile changes
Contraindications
Active cancer (due to growth-promoting effects)
Diabetic retinopathy
Severe kidney disease
Pregnancy or breastfeeding
Prostate cancer (active or history of hormone-sensitive prostate cancer)
Breast cancer in males
Pregnancy or potential for pregnancy (causes virilization of female fetus)
Known hypersensitivity to drostanolone or any formulation components
Severe hepatic impairment
Pre-existing significant hair loss where further androgenic exposure is unacceptable
Polycythemia (hematocrit above 54% at baseline)
Uncontrolled cardiovascular disease or severe dyslipidemia
Research Evidence
CJC-1295 (without DAC) Masteron
Status Well Studied Moderate Research
References 5 studies 5 studies
Latest November 2024 March 2020
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.