Clomiphene Citrate for Infertility

 

Side effects of clomiphene include:

  • Ovarian hyperstimulation, ranging from mild, with enlarged ovaries and abdominal discomfort; to moderate, additionally causing nausea, vomiting, or shortness of breath; to severe and life-threatening.
  • Hot flashes.
  • Irritability.
  • Nausea, abdominal pain.
  • Headaches.
  • Thick cervical mucus, which sperm cannot travel through. This can be reversed with medicine or bypassed with intrauterine insemination.
  • Breast tenderness.
  • Blurred vision.
  • Hair loss (very rare).

Women who become pregnant after clomiphene therapy have an approximately 5% to 8% chance of multiple pregnancy.3 This compares to a 1% to 2% chance in the general North American and European population.2 Multiples resulting from clomiphene treatment are almost exclusively twins. Triplets are rare.3

Miscarriage risk?

In some studies, miscarriage rates are slightly higher in women who become pregnant using clomiphene. It is not clear if this is related to an early hormonal effect on the egg or to preexisting conditions such as age or polycystic ovary syndrome, which are found more often in women who take clomiphene. Other studies have not shown an increased miscarriage rate.3

Clomiphene has not been observed to harm the fetus.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

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