Reviewed by the PeptideMind Team · Updated August 5, 2026
HCG Peptide Dosage Calculator, Benefits & Side Effects
Use our free calculator to find your HCG peptide dose. HCG mimics LH to stimulate natural testosterone production and preserve fertility during TRT. See dosing & side effects.
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What is HCG?
HCG (Human Chorionic Gonadotropin) is a hormone that acts like a stand-in for a key reproductive signal (LH), telling the body to keep producing testosterone and support fertility. It's an FDA-approved treatment used for certain fertility issues in both men and women, including undescended testicles in boys and ovulation support in women. It's also widely used by men on testosterone therapy to help preserve natural testicular function and fertility.
Hormonal
hcg
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What Does HCG Do?
It attaches to the same receptor that a reproductive hormone (LH) normally uses in the testes, switching on an internal signal that tells cells there to produce testosterone. This helps maintain natural testosterone production and support fertility.
Mimics LH
Attaches to the same receptor a reproductive hormone (LH) normally uses.
Signals the testes
Switches on an internal signal in testicular cells.
Maintains testosterone
Helps sustain natural testosterone production and fertility.
HCG Targeted areas
Frequently Asked Questions About HCG
Straight answers on reconstitution, dosing, and safety, everything you need to research with confidence. For research reference only.
HCG Reconstitution Guide
HCG is supplied as a freeze-dried powder that must be mixed into a injectable solution before use. Available in 1000iu, 5000iu sizes.
5,000 IU lyophilized vial
HCG is supplied as a freeze-dried powder that must be mixed into a injectable solution before use. Available in 1000iu, 5000iu sizes.
5 mL bacteriostatic water
Adding 5 mL of bac water to a 5,000 IU vial gives a workable concentration for syringe dosing. More water makes microdosing easier; less concentrates each draw.
Storage after mixing
Keep the dry powder well below freezing for long-term storage, or it can sit at room temperature for a few weeks. Once mixed with liquid, refrigerate and use within about two months. After reconstitution, keep the vial refrigerated and use within 30 days.
Reconstitution steps
Remove caps & sanitize stoppers
Attach needle to syringe
Draw 5 mL bacteriostatic water
Insert needle into HCG vial
Release water gently down the side
Swirl to dissolve — don't shake
Check for full dissolution
Refrigerate HCG — good for 30 days
What Are the Benefits of HCG?
What research says it may help with, and how it works in the body.
male fertility
Approved by the FDA for a form of low testosterone caused by a signaling problem in the brain (secondary hypogonadism), and is combined with another hormone (FSH) to kickstart sperm production.
Helps the testicles return to normal function after a cycle of anabolic steroids.
Keeps testosterone levels inside the testicles normal during testosterone therapy, which prevents the testicles from shrinking and helps preserve fertility.
female fertility
Approved by the FDA to trigger the final maturing of an egg before ovulation in fertility treatment, with a 15-25% chance of pregnancy per cycle.
pediatric
Approved by the FDA to treat undescended testicles in boys who haven't reached puberty, when the cause isn't a physical blockage, with about a 25% success rate.
What Are the Side Effects of HCG?
Who should avoid it, warning signs to watch for, and what to know before combining it with other compounds.
Who Should Avoid It
Hormone-sensitive cancers (prostate, breast)
Pregnancy (except as prescribed)
Precocious puberty risk in children
Stop Right Away If You Notice
Signs of gynecomastia (breast tenderness, swelling, nipple sensitivity)
Severe or persistent headaches
Signs of blood clots (leg swelling/pain, shortness of breath, chest pain)
Allergic reactions (rash, hives, difficulty breathing, facial swelling)
Severe abdominal pain or bloating in women (possible OHSS)
Testicular pain or swelling beyond normal
Significant mood changes (depression, aggression, severe irritability)
Vision changes
Milder Signs to Watch For
Is HCG FDA approved?
HCG is FDA approved.
FDA Approved
HCG has been reviewed and approved by the FDA for safety and efficacy in its approved indications.
Regulated Manufacturing
Manufactured under FDA-regulated quality standards, ensuring consistent purity and dosing.
Prescription Use
Legally available by prescription for its approved medical indications.
HCG Cycle Length: How Long Should It Last?
This breaks down how long a typical HCG cycle runs and what research suggests happens at each stage. Research shows that staying on a peptide continuously, without a break, may make it less effective over time.
That's why most research protocols build in a break between cycles, often called a washout period, to let the body reset before starting again.
- Day 1-3
- Cellular-level action begins; no immediate noticeable effects
- Week 1-2
- Testosterone increase detectable on labs; possible mood/energy improvement
- Week 2-4
- Testicular fullness/size improvement noticeable; improved well-being
- Week 4-8
- Stable testosterone levels; fertility parameters beginning to improve
- Month 2-3
- Sperm count improvements if used for fertility; sustained testicular function
- Week 0-0
- Maintained testicular size and function with ongoing use
HCG Research References
It is a fda approved compound
HCG
HCG is a fda approved compound
HCG Monotherapy for Hypogonadism
HCG monotherapy (1500-2000 IU twice weekly) effectively increased testosterone and improved symptoms while maintaining fertility.
2013
Ovulation Induction Success Rates
HCG trigger achieves pregnancy rates of 15-25% per cycle in clomiphene/letrozole protocols.
2017
250 IU HCG every other day during TRT maintains intratesticular testosterone at baseline, preventing atrophy and preserving fertility.
2005
Meta-analysis of 1,231 boys showing ~25% success rate for hormonal treatment of cryptorchidism.
2014
Combined HCG and FSH therapy induces spermatogenesis in 70-90% of men with hypogonadotropic hypogonadism.
2018