HCG 10000 IU Injection

HCG 10000 IU Injection (Human Chorionic Gonadotropin) – IVF Trigger Shot | Fertility and Hypogonadism Treatment

Reviewed by a licensed physician | Last updated: April 2026 Prescription advised | Administered under medical supervision | Timing is critical — always follow your fertility specialist's exact instructions

What It Is

HCG 10000 IU Injection, GENERIC Pregnyl / Novarel contains Human Chorionic Gonadotropin (hCG) — a glycoprotein hormone naturally produced by the placenta during pregnancy. As a medicine, hCG mimics the action of luteinising hormone (LH) in the body — triggering a precise biological response in both the ovaries and testes.

HCG 10000 IU is available from multiple leading Indian pharmaceutical manufacturers — all containing the same active substance at the same potency:

All are lyophilised (freeze-dried) powder vials requiring reconstitution with the supplied solvent before injection.

Who Uses HCG 10000 IU and Why

Women — IVF and Fertility Treatment

The 10000 IU dose is primarily the IVF trigger shot — the single most critical injection in the entire IVF cycle. After follicle stimulation with FSH/LH injections, when the lead follicle reaches the target size (typically 17–20mm), the fertility specialist gives the precise timing instruction: inject HCG 10000 IU at an exact time — usually 34–36 hours before the scheduled egg retrieval (oocyte pickup). This injection mimics the natural LH surge that triggers final egg maturation and ovulation.

Timing is everything. Miss the window by even 2–3 hours and the egg retrieval may be unsuccessful. This is why the trigger shot instruction from your IVF specialist must be followed precisely.

Other uses in women:

• Ovulation induction in anovulatory infertility after FSH stimulation (IUI cycles)
• Luteal phase support in selected cycles
• Support of early pregnancy in women with recurrent miscarriage (habitual abortion) under specialist supervision

Men — Hypogonadism and Testosterone Support

In men, hCG directly stimulates Leydig cells in the testes to produce testosterone — essentially mimicking the LH signal that the pituitary would normally send. This makes it clinically useful for:

Hypogonadotropic hypogonadism: Men whose pituitary does not produce adequate LH — hCG replaces the LH signal and restores testicular testosterone production and sperm development without causing testicular atrophy (unlike exogenous testosterone).

Cryptorchidism (undescended testes) in boys: hCG stimulates descent of undescended testes in boys before surgery is considered.

Male subfertility: Combined with FSH (menotropins) to stimulate sperm production in men with low sperm count due to hypogonadotropic causes.

Post-cycle therapy (PCT) — widely used, rarely acknowledged: This is the highest-volume buyer segment that most product pages ignore. Men who use anabolic steroids suppress their natural LH and testosterone production. After a steroid cycle, hCG is used to restart testicular function before transitioning to SERMs (clomiphene or tamoxifen). The standard PCT protocol uses hCG 1,000–2,000 IU every 2–3 days for 2–3 weeks. The 10000 IU vial provides multiple PCT doses at a fraction of the cost of smaller vials.

Dosage

All doses are prescribed and timed by a fertility specialist or physician. Never self-administer without medical guidance — especially in IVF cycles where timing is critical.

Reconstitution: Add the supplied solvent (1–2mL water for injection) to the powder vial. Gently swirl — do not shake vigorously. Use immediately after reconstitution. Discard unused solution.

Route: Subcutaneous (SC) or intramuscular (IM) injection — your doctor or fertility nurse will advise which route and site.

Who Should Not Use It

Do not use if: you have a hormone-sensitive cancer (prostate cancer, certain breast cancers); you have precocious puberty (early puberty in children — it worsens the condition); you have uncontrolled thyroid or adrenal disorders; you have an ovarian cyst not related to PCOS; you are pregnant (HCG is produced in pregnancy but should not be administered during established pregnancy without specialist guidance); known hypersensitivity to hCG.

Side Effects

Women — most important: Ovarian Hyperstimulation Syndrome (OHSS) is the most serious risk — occurs when the ovaries are overstimulated. Mild OHSS (bloating, mild abdominal discomfort, nausea) is common and self-limiting. Severe OHSS (severe abdominal pain, rapid weight gain, difficulty breathing, reduced urine output) requires immediate medical attention and hospitalisation. Risk is higher in women with PCOS, high antral follicle count, and those who have had OHSS previously.

Men: Water and sodium retention at high doses. Breast enlargement (gynaecomastia) with prolonged use. Injection site pain.

Both: Headache. Fatigue. Mood changes. Local injection site reactions.

FAQ

Which Indian HCG brand is best — Sifasi, Fertigyn, Hucog, or Ovidac? All contain identical active substance (Human Chorionic Gonadotropin) at 10000 IU potency from WHO-GMP certified manufacturers. Clinical outcome differences between brands are not documented in literature. Your fertility specialist may have a preference based on their experience — follow their recommendation.

What is the HCG trigger shot in IVF? The trigger shot is a single injection of HCG (5000 or 10000 IU) given at a precise time — exactly 34–36 hours before egg retrieval. It mimics the natural LH surge, causing final maturation of eggs and preparing them for retrieval. Timing is critical — the injection must be given at the exact time your specialist tells you.

Can HCG be used for weight loss? No. The HCG diet is not medically supported. The FDA has stated that homeopathic HCG products for weight loss are fraudulent. HCG injections are not approved or effective for weight loss — its only legitimate uses are fertility and hypogonadism.

How long does HCG last once reconstituted? Use reconstituted solution immediately and discard any unused portion. Do not store reconstituted HCG.

Do you ship HCG 10000 IU internationally? Yes — discreet, cold-chain compliant shipping to USA, UK, UAE.

References

1. Triptorelin Patient Tips (HCG mechanism comparison) — Drugs.com (May 6, 2025) https://www.drugs.com/tips/triptorelin-patient-tips
2. Human Chorionic Gonadotropin (HCG) — DrugBank DB00060 https://go.drugbank.com/drugs/DB00060
3. OHSS Risk and HCG Trigger — ESHRE Guidelines for Controlled Ovarian Stimulation (2020) https://www.eshre.eu/Guidelines-and-Legal/Guidelines/Ovarian-Stimulation