CJC-1295 (without DAC) vs LGD-4033
Well Studied vs Moderate Research
monitor Mechanism-based · 51% Both CJC-1295 (without DAC) and LGD-4033 can elevate estrogen. Combined estrogenic load increases risk of gynecomastia, water retention, and mood changes. Monitor estradiol levels and consider AI if needed.
Molecular Data
CJC-1295 (without DAC) LGD-4033
Weight 3,367.97 Da 338.25 Da
Half-life 30 minutes - 2 hours ~24-36 hours
Chain 30 amino acids —
Type GHRH analog Nonsteroidal selective androgen receptor modulator (C14H12F6N2O)
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
LGD-4033
01 Strongest SARM for lean muscle mass accrual, with clinical trial data supporting dose-dependent increases in lean body mass
02 Tissue-selective action with minimal stimulation of the prostate and other androgen-sensitive tissues
03 Clinical evidence of improved physical function (leg press strength, stair-climbing speed) in hip fracture patients
04 No aromatization to estrogen (no estrogen-related water retention or gynecomastia at the receptor level)
05 No conversion to DHT (reduced risk of androgenic hair loss and prostate stimulation compared to testosterone)
06 Convenient once-daily oral dosing due to 24-36 hour half-life
07 Phase 2 clinical data available, providing a stronger evidence base than most other SARMs
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
LGD-4033
5-10 mg/day / Once daily (oral)
Side Effects
CJC-1295 (without DAC)
Generally well-tolerated at recommended doses
Temporary facial flushing/warmth (5-10 minutes post-injection)
LGD-4033
Testosterone suppression (dose-dependent; more suppressive than Ostarine at equivalent doses, occurs in most users by week 4-6)
Water retention (non-estrogenic mechanism, typically mild to moderate, contributes to scale weight increase)
HDL cholesterol reduction (dose-dependent lipid impact observed in clinical trials)
Headaches (most common in the first 1-2 weeks, usually transient)
Fatigue or lethargy (related to testosterone suppression, typically becomes noticeable mid-cycle)
Reduced libido (related to HPG axis suppression, severity varies by dose and individual)
Contraindications
Active cancer (due to growth-promoting effects)
Diabetic retinopathy
Severe kidney disease
Pregnancy or breastfeeding
Pre-existing liver disease or elevated liver enzymes at baseline
Hormone-sensitive cancers (prostate cancer or other androgen-driven malignancies)
Pregnancy or potential pregnancy (teratogenic risk from androgen receptor agonism)
Breastfeeding
Age under 25 (incomplete endocrine system maturation and higher risk of HPG axis disruption)
Concurrent use of hepatotoxic medications without medical supervision
Known cardiovascular disease (insufficient long-term safety data for this population)
History of significant lipid abnormalities (LGD-4033 suppresses HDL)
Research Evidence
CJC-1295 (without DAC) LGD-4033
Status Well Studied Moderate Research
References 5 studies 5 studies
Latest November 2024 2018
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.