Human chorionic gonadotropin (hCG) is a hormone that's naturally made in the body during pregnancy. It's also very similar to luteinizing hormone (LH), a hormone involved in reproduction in males and females. As a medication, HCG (Pregnyl, Novarel) is used for fertility treatments in females. It's also used in certain cases to raise testosterone levels in males and to help the testes descend in males who haven't yet reached puberty (cryptorchidism). HCG is injected into the muscles (or as directed by your provider), typically a few times a week. Some common side effects of HCG can include headache, irritability, and feeling restless.
Female infertility
Low testosterone levels in males (hypogonadism) caused by pituitary gland condition
Prepubertal cryptorchidism (a condition where the testes haven't descended)
HCG is a hormone naturally produced by body during pregnancy. It's also very similar to luteinizing hormone (LH), a hormone involved in reproduction in males and females.
In female infertility, HCG is used (along with other medications) to promote ovulation. This can help raise the chance of getting pregnant.
In males, HCG causes the production of hormones called androgens (e.g., testosterone). Androgens are responsible for the testes moving into the scrotum, as well as sperm production in males.
Source: DailyMed
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
If appropriate and with proper training, can be injected at home
Can be used in children 4 years and older (in certain conditions)
Need to mix before injection, which can be inconvenient
Only available as an injection
Can cause headaches and irritability as side effects
Injection instructions will vary from person to person. Make sure you understand how to mix and inject the medication properly before starting home injections. It's important to get the correct amount of medication. Ask your provider if you're not sure how to prepare and use HCG.
HCG comes in a vial of dry powder that will need to be mixed with the included bacteriostatic water. Always inspect the vial before you prepare your injection. Make sure it's not cloudy, leaky, or containing any particles (solid chunks). If it has particles, is discolored, or foamy, don't use it and contact your provider or pharmacy about getting a replacement vial, since it might not be safe to use.
Always wash your hands before handling HCG and injecting it. It's also important to clean the injection site with an alcohol swab and let it dry before injecting HCG. This will help prevent contamination, which can lead to infection.
Use a new needle and syringe each time you give yourself HCG. Throw away your used needles and syringe in a sharps container (a closable container that's puncture-resistant) right after the injection. Don't throw it away in your household trash to lower the risk of needlestick injuries.
The medication contains a preservative called benzyl alcohol that prevents contamination (spreading germs) and bacterial growth. After 30 or 60 days of being in the refrigerator (depending on the brand), throw away any leftover medication.
HCG can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Serious allergic reactions, including anaphylaxis, have been reported with the use of HCG. If you experience trouble breathing, swelling of your lips or tongue, or rash, get medical attention right away.
In females, HCG can cause OHSS, a condition that happens when the ovaries grow too large after you've finished your injection. It can cause stomach pain, stomach bloating, and weight gain. More serious cases include symptoms like severe pain or stomach bloating, trouble breathing, and nausea, vomiting, or diarrhea, or a bursting cyst. Symptoms can occur within days after using HCG, but can also happen even 10 days after the injection. They usually goes away on its own within 2 weeks. People who develop OHSS and then successfully become pregnant tend to have more severe OHSS symptoms. If you feel extreme belly pain, nausea, vomiting, or feel faint after using HCG, tell your provider right away.
Risk factors: Personal or family history of blood clots | Smoking | Ovarian hyperstimulation syndrome (OHSS) | Overweight
HCG can raise your risk of blood clots, which can lead to life-threatening problems. Smoking, OHSS, or a history of blood clots raise this risk even more. Blood clots can lead to a heart attack, a stroke, or a pulmonary embolism (life-threatening blood clot in the lungs). Be sure to discuss all your past and present medical conditions with your provider before starting HCG. Call 911 or get medical help right away if you have pain in your legs or arms, chest pain, sudden severe headaches, trouble breathing, or sudden changes in your speech or vision.
All gonadotropin fertility treatments, including HCG, make you much more likely to conceive and deliver more than one baby (e.g., twins, triplets). This is due to how the medication works to prepare the body to ovulate. Discuss this possibility with your partner before starting HCG.
Risk factors: Children who haven't gone through puberty
HCG can cause puberty to happen too early in males who are treated for cryptorchidism. If signs of early puberty occur (e.g., changes in voice, hair growth under the arms or near the genitals), stop using HCG and let your child's provider know.
There are reports of tumors in the testes in otherwise healthy, young men using HCG for infertility. Contact your provider right away if you notice lumps or enlargements in either testicle, pain in your stomach, groin, or scrotum, or back pain.
Risk factors: Asthma | Kidney problems | Heart problems | Seizures | Migraines
HCG raises levels of hormones known as androgens, which can lead to water retention (when your body holds onto too much water). This can worsen certain conditions like asthma, kidney problems, heart problems, seizures, and migraines. Make sure to discuss your medical history with your provider before starting HCG.
The dose of HCG is measured in USP units.
Female infertility
Your provider will determine your dose based on age, body weight, and preference.
The typical dose ranges from 5,000 USP units to 10,000 USP units injected into the muscles one day after the last dose of Menopur (menotropins).
Lower testosterone levels
Your provider will determine your dose based on age, body weight, and preference. Examples of typical dosing include:
A possible dose ranges from 500 USP units to 1,000 USP units injected into the muscles three times a week for 3 weeks. After that, your provider will continue at the same dose twice a week for 3 weeks.
A possible dose is 4,000 USP units injected into the muscles three times a week for 6-9 months. After that, your child's provider will lower the dose to 2,000 USP units three times a week for 3 months.
Prepubertal cryptorchidism
Your child's provider will determine the dose based on your child's age, body weight, and preference. Examples of typical dosing include:
A possible dose is 4,000 USP units injected into the muscles three times a week for 3 weeks.
A possible dose is 500 USP units injected into the muscles three times a week for 4-6 weeks. If needed, your child's provider might continue the treatment a month later by raising the dose to 1,000 USP units per injection.
Early puberty
Prostate cancer (or other androgen-dependent cancer)
Currently pregnant
Female infertility
Low testosterone levels in males (hypogonadism) caused by pituitary gland condition
Prepubertal cryptorchidism (a condition where the testes haven't descended)
Low testosterone (hypogonadism) in males
Delayed puberty in males
Metastatic breast cancer that have spread to the bones in females who've started menopause in the past 1 to 5 years
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