How does Pregnyl work, and about how many shots do you need to take before you get pregnant?

Pregnyl (human chorionic gonadotropin - HCG) is a hormone that supports the normal development of an egg in a woman's ovary, and stimulates the release of the egg during ovulation.

HCG is used to cause ovulation and to treat infertility in women.

Human chorionic gonadotropin (HCG) is given as an injection under the skin or into a muscle. If you use this medicine at home, your doctor, nurse, or pharmacist will give you specific instructions on how and where to inject this medicine. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles and syringes.

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Call your doctor at once if you have any of these signs of a blood clot: pain, warmth, redness, numbness, or tingling in your arm or leg; confusion, extreme dizziness, or severe headache.
Some women using this medicine have developed a condition called ovarian hyperstimulation syndrome (OHSS), especially after the first treatment cycle. OHSS can be a life-threatening condition. Call your doctor right away if you have any symptoms of OHSS: severe pelvic pain, swelling of the hands or legs, stomach pain and swelling, shortness of breath, weight gain, diarrhea, nausea or vomiting, and urinating less than normal.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

To help pregnancy occur in women:

* Adults—5000 to 10,000 Units injected into the muscle on a day chosen by your doctor. The dose and day will depend on your hormone levels and the other medicines that you have been using.

http://www.drugs.com/mtm/pregnyl-injectable.html

http://www.drugs.com/cons/pregnyl.html