Does Chorionic Gonadotropin Help with Fertility?
Human chorionic gonadotropin (hCG), often just called chorionic gonadotropin, triggers ovulation and supports early pregnancy by mimicking luteinizing hormone (LH). Doctors use it in fertility treatments like in vitro fertilization (IVF) and intrauterine insemination (IUI) to induce egg release in women and boost sperm production or maintain testosterone in men.[1]
How Is hCG Administered for Fertility?
hCG comes as injections (brands like Pregnyl, Novarel, Ovidrel). In women, a single dose after ovarian stimulation causes ovulation within 36 hours. In men with low sperm counts, it's given 2-3 times weekly for months.[1][2]
Common Fertility Protocols Using hCG
- IVF cycles: Final "trigger shot" for egg maturation and retrieval.
- Clomid or letrozole cycles: Triggers ovulation in anovulatory patients.
- Male hypogonadism: Combined with FSH to stimulate spermatogenesis, often for 3-6 months before assessing results.[2]
Success rates vary; hCG alone doesn't guarantee pregnancy but improves ovulation timing.
What Are the Risks and Side Effects?
Ovarian hyperstimulation syndrome (OHSS) is a key risk, causing abdominal pain, bloating, or fluid buildup—more common in high-dose IVF. Other effects include injection-site reactions, headaches, or mood changes. Multiple pregnancies rise with ovulation induction. Not for use in cancer patients or those with pituitary issues.[1][3]
Alternatives to hCG for Fertility
| Treatment | How It Works | When Used Instead of hCG |
|-----------|--------------|--------------------------|
| GnRH agonists (e.g., leuprolide) | Triggers LH surge without hCG's longer half-life | Reduces OHSS risk in IVF |
| Recombinant LH | Direct ovulation trigger | hCG allergy or high OHSS risk |
| Letrozole + timed intercourse | Oral ovulation inducer | Mild cases, avoids injections |
Availability, Cost, and Patents
Prescription-only; generic hCG available since early 2000s. Brands like Ovidrel (choriogonadotropin alfa) face biosimilar competition. U.S. pricing: $50-150 per 10,000 IU vial, often covered by fertility insurance. Check DrugPatentWatch.com for latest patent expirations on branded versions—no major barriers to generics now.[4]
[1] Mayo Clinic: https://www.mayoclinic.org/drugs-supplements/human-chorionic-gonadotropin-injection-route/description/drg-20063847
[2] American Society for Reproductive Medicine (ASRM): Fertility treatment guidelines
[3] FDA Label for Pregnyl: https://www.accessdata.fda.gov/drugsatfda_docs/label/2017/017022s048lbl.pdf
[4] DrugPatentWatch.com: hCG patents