While most women use human chorionic gonadotropin, or HCG, as part of a program to help them get pregnant, some proponents claim the use of HCG can help you lose weight. MayoClinic.com notes that no evidence exists to prove HCG is effective in weight loss. Doctors also may prescribe HCG to help male children who have cryptorchidism, meaning their testicles have not descended properly. Whether you take HCG injections for infertility problems, cryptorchidism or as part of an HCG diet, you may experience side effects from the hormone therapy.
Ovarian Hyperstimulation Syndrome
One in four women using HCG will get ovarian hyperstimulation syndrome in a mild form, MayoClinic.com indicates. Some women will get a more severe form of this potentially life-threatening condition. The more common mild form, generally lasting approximately a week, can produce such symptoms as vomiting and nausea, diarrhea, and bloating of the abdomen. You also may feel pain in your abdomen that fluctuates. The more severe type of OHSS may cause you to feel short of breath. It also may cause severe pain in your pelvis, pain in your stomach and edema in your legs and hands. Seek immediate medical advice if you get any of these symptoms of OHSS.
Precocious Puberty
A boy taking HCG for cryptorchidism may go into puberty early, Drugs.com reports. Such manifestations as the onset of acne, excessive sweating, the growth of pubic hair and deepening of the voice can occur. Because precocious puberty can potentially cause some health concerns, consult your doctor immediately for help.
Mental Changes
Any hormonal balance shift caused by the introduction of a hormone from outside your body can produce changes in your mental state as temporary and non-serious side effects of HCG, Drugs.com indicates. You may go into a state of depression because of HCG. You also may become irritable and you may feel restless. These forms of side effects typically correct themselves when your body adjusts to the additional hormone. However, if you suffer from depression and it does not end in a few days, go to your doctor for help. Depression can cause serious problems, including thoughts of suicide.
Edema
The use of HCG may cause some minor and temporary swelling during the initial stage. You may feel edema in your breasts that may cause tenderness. You may notice a general edema because of fluid retention. The area of skin where you receive injections also may swell. If any of this swelling persists or feels severe, seek counsel from your medical practitioner. Otherwise, edema should recede and end by itself.


