Human Chorionic Gonadotropin (HCG) vs Prostamax
A powerful hormone that mimics luteinizing hormone (LH) to stimulate your body's natural testosterone production while keeping your fertility intact—like having your cake and eating it too for men on hormone therapy.
Prostate-specific tetrapeptide bioregulator (Lys-Glu-Asp-Pro) that normalizes prostatic epithelial differentiation through chromatin remodeling at prostate gene promoters, restores the proliferation-apoptosis balance disrupted in benign prostatic hyperplasia, and reduces inflammatory cytokine signaling in aging prostate tissue
Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards
Quick comparison
Dose range
Human Chorionic Gonadotropin (HCG)
500–1500 IU
Prostamax
0.01–100 mcg/kg
Frequency
Human Chorionic Gonadotropin (HCG)
Twice weekly
Prostamax
Once daily
Administration
Human Chorionic Gonadotropin (HCG)
Subcutaneous injection
Prostamax
Sublingual (enteric-coated capsules)
Cycle length
Human Chorionic Gonadotropin (HCG)
Ongoing/indefinite
Prostamax
12+ weeks
Onset speed
Human Chorionic Gonadotropin (HCG)
Moderate (1-2 weeks)
Prostamax
Gradual (3-4 weeks)
Evidence level
Human Chorionic Gonadotropin (HCG)
Strong human trials (Phase 3 or FDA approved)
Prostamax
Limited human trials
Benefit ratings
Fertility Preservation
Testicular Health
Hormone Balance
Prostate Health
Urinary Function
Tissue Inflammation
Compound specifications
Human Chorionic Gonadotropin (HCG)
Molecular formula
C1105H1770N318O336S26 (approximate)
Molecular weight
36,700 g/mol (approximately)
Half-life
24-36 hours
Bioavailability
High when injected subcutaneously or intramuscularly
CAS number
9002-61-3
Prostamax
Molecular formula
C20H33N5O9
Molecular weight
487.5 g/mol
Half-life
Short plasma half-life typical of tetrapeptides (minutes to hours); biological effects persist for weeks to months through chromatin remodeling at prostate gene promoters; metabolized to constituent amino acids
Bioavailability
Absorbed via intestinal peptide transporters (PepT1) in oral formulation; rapid absorption from subcutaneous injection sites; efficient cellular uptake due to short tetrapeptide structure with proline conferring conformational stability
CAS number
Not publicly registered
Dosing compared
Human Chorionic Gonadotropin (HCG)
Subcutaneous
500-1,500 IU
2-3 times per week · Ongoing with TRT
Documented clinical practice for preserving testicular function/fertility in men on testosterone therapy; 1,500-2,000 IU 2-3x/week is used for hypogonadotropic hypogonadism [6]. The popular 500 IU 2-3x/week maintenance figure reflects real-world practice rather than the FDA label. In controlled dosing, 250 IU every other day held intratesticular testosterone within 7% of baseline and 500 IU raised it 26% above baseline during testosterone administration [7]; 500 IU every other day preserved semen parameters with no azoospermia in men on TRT [8].
Intramuscular
500-1,000 IU
3 times weekly for 3 weeks, then 2 times weekly for 3 weeks · 6-week induction course
FDA-labeled regimen for male hypogonadotropic hypogonadism (Pregnyl) [7]. Intramuscular is the only labeled route.
4,000 IU then taper to 2,000 IU
3 times weekly · 4,000 IU for 6-9 months, then 2,000 IU for 3 additional months
Higher-dose FDA-labeled regimen for inducing spermatogenesis/testicular descent (Pregnyl) [7].
Prostamax
Intramuscular
0.01-100 mcg/kg
Once daily · 10-40 days
Dose from a single-institute patent report in 35 chronic-prostatitis patients [6]. The wide range reflects dose-finding within that single report.
Oral
~10 mg
Once daily · 10-30 day course
Capsule form reflecting bioregulator product labeling and practice [1].
Best suited for
Human Chorionic Gonadotropin (HCG)
Fertility Preservation During TRT
If you're on testosterone therapy but want to keep your swimmers swimming, HCG is your best friend. It keeps your testes active and producing sperm even when external testosterone would normally shut that down. Research shows it can maintain or restore spermatogenesis in about 80% of men [3][4][8].
Preventing Testicular Atrophy
Nobody wants their boys to shrink. When you take external testosterone, your brain stops signaling your testes to work—and they get smaller from disuse. HCG mimics the signal (LH) that keeps them active, maintaining their size and function [6][14].
Hypogonadotropic Hypogonadism
If your pituitary gland isn't sending the right signals to your testes (low LH), HCG can step in and do the job. It's been used for decades to treat this condition, helping men achieve normal testosterone levels and fertility [3][6][13].
Post-Cycle Therapy (PCT)
After using anabolic steroids, your natural hormone production is suppressed. HCG can help jumpstart your testes back into action, speeding up the recovery of your natural testosterone production. It's often used as part of a comprehensive PCT protocol [9][15].
Prostamax
Age-related benign prostatic hyperplasia (BPH) requiring tissue-level normalization
Prostamax is particularly well-suited for individuals focused on age-related benign prostatic hyperplasia (bph) requiring tissue-level normalization. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Prostate geroprotection — preserving prostatic epithelial function during aging
Prostamax is particularly well-suited for individuals focused on prostate geroprotection — preserving prostatic epithelial function during aging. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Chronic prostatitis support through anti-inflammatory tissue-level mechanisms
Prostamax is particularly well-suited for individuals focused on chronic prostatitis support through anti-inflammatory tissue-level mechanisms. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Comprehensive Khavinson bioregulator protocols targeting male genitourinary health
Prostamax is particularly well-suited for individuals focused on comprehensive khavinson bioregulator protocols targeting male genitourinary health. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Side effects
Human Chorionic Gonadotropin (HCG)
Common
- Injection site reactions
- Headache
- Water retention
Uncommon
- Gynecomastia
- Mood changes
- Acne
Serious
- Blood clots
Prostamax
Common
- Injection site reaction
- Mild fatigue
- Urinary frequency changes
- Mild headache
Uncommon
- Mild pelvic discomfort
Serious
- No documented serious adverse effects
Safety & evidence
Human Chorionic Gonadotropin (HCG)
Evidence level
Strong human trials (Phase 3 or FDA approved)
FDA status
FDA approved for other use
Safety overview
HCG has been used medically for over 80 years with a well-established safety profile. [10] When used appropriately for male hypogonadism or fertility preservation, side effects are generally mild and manageable. The most common issues relate to elevated estrogen from increased testosterone aromatization, which can be managed with aromatase inhibitors if needed. [6][18] Serious side effects are rare when HCG is used under medical supervision.
Contraindications
- Hormone-sensitive cancers (prostate, breast)
- Precocious puberty in children
- Known allergy to HCG or any component
- Pregnancy (in therapeutic male contexts)
- Untreated thyroid or adrenal disorders
Prostamax
Evidence level
Limited human trials
FDA status
Research compound
Safety overview
Prostamax (proprietary peptide blend) demonstrates limited published safety data; primarily used in clinical practice based on observational evidence. No serious adverse events reported in clinical use; mild gastrointestinal tolerance issues occasionally reported. Derived from bovine prostatic tissue; potential allergenicity in beef-sensitive individuals requires screening. Quality control and standardization vary across manufacturers.
Contraindications
- Known or suspected prostate cancer — potential modulation of prostatic gene expression requires oncological clearance
- Known hypersensitivity to peptide bioregulators or constituent amino acids (lysine, glutamic acid, aspartic acid, proline)
- Severe urinary retention requiring surgical intervention — epigenetic therapy cannot address acute obstruction
- Concurrent anti-androgen therapy without medical supervision — potential interaction with hormonal mechanisms
Which is right for you?
Choose Human Chorionic Gonadotropin (HCG) if...
- Fertility preservation during TRT
- Maintaining testicular size and function
- Natural testosterone stimulation
- Post-cycle therapy recovery
Choose Prostamax if...
- Age-related benign prostatic hyperplasia (BPH) requiring tissue-level normalization
- Prostate geroprotection — preserving prostatic epithelial function during aging
- Chronic prostatitis support through anti-inflammatory tissue-level mechanisms
- Comprehensive Khavinson bioregulator protocols targeting male genitourinary health