HCG vs Testagen
FDA Approved vs Moderate Research
compatible Both support testosterone; different mechanisms.
Molecular Data
HCG Testagen
Weight 36,700 Da 419 Da
Half-life 24-36 hours Not established
Chain 237 amino acids (alpha: 92, beta: 145) 4 amino acids
Type Heterodimeric glycoprotein Tetrapeptide bioregulator
Key Benefits
HCG
01 Maintains testicular function during TRT
02 Preserves fertility and prevents testicular atrophy
03 Stimulates endogenous testosterone production
04 Induces ovulation in women
05 FDA-approved for multiple indications
06 Well-established safety profile
Testagen
01 Promotes testosterone biosynthesis
02 Stimulates Leydig cell activity
03 Improves testicular cellular metabolism
04 Restores HPG axis communication
05 Supports spermatogenesis
06 Reduces prostatic inflammation
07 Enhances male reproductive balance
08 May normalize testosterone at any age
Dosing Protocols
HCG
250-1500 IU (lower for TRT adjunct, higher for fertility) / 2-3 times weekly, or every other day for lower doses
TRT Adjunct (Low) 250-500 IU Every other day
TRT Adjunct (Standard) 500-1000 IU Twice weekly
HCG Monotherapy 1500-2000 IU 2-3x weekly
Fertility (with FSH) 1500-2000 IU 2-3x weekly
Cryptorchidism (Pediatric) 1000-5000 IU 2-3x weekly for 3-4 weeks
Ovulation Trigger (Female) 5000-10,000 IU Single dose
PCT Protocol 1000-1500 IU Every other day for 2-3 weeks
Testagen
10-20mg daily during cycle / Daily for 10-20 days, then break
Research protocol 10 mg Daily for 10 days
Side Effects
HCG
Gynecomastia (breast tenderness/swelling) due to increased estrogen
Headaches, irritability, and mood swings (especially initially)
Fluid retention and edema
Potential antibody formation with long-term use
Testagen
Generally well-tolerated
Minimal side effects reported
Contraindications
Hormone-sensitive cancers (prostate, breast)
Pregnancy (except as prescribed)
Precocious puberty risk in children
Hormone-sensitive cancers (consult oncologist)
Known hypersensitivity
Female use not established
Research Evidence
HCG Testagen
Status FDA Approved Moderate Research
References 5 studies 4 studies
FDA Approved Yes No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.