Side Effects of Fulvestrant

If side effects of fulvestrant occur, they are usually minor and easily treated. Some of the most common side effects include nausea, hot flashes, and a sore throat. However, some fulvestrant side effects are more serious and may need immediate medical attention. Notify your healthcare provider right away if you notice depression, anxiety, or signs of an allergic reaction or a blood clot.

An Introduction to Side Effects of Fulvestrant

As with any medicine, side effects are possible with fulvestrant (Faslodex®). However, not everyone who takes the medication will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with fulvestrant. Your healthcare provider can discuss a more complete list of fulvestrant side effects with you.)
 

Common Side Effects of Fulvestrant

Fulvestrant has been studied thoroughly in clinical trials, in which the side effects of a group of people taking the drug are documented. In these studies, the most common side effects of fulvestrant included:
 
  • Nausea -- in up to 26 percent of women
  • Weakness -- up to 22.7 percent
  • Pain -- up to 18.9 percent
  • Hot flashes -- up to 17.7 percent
  • A sore throat -- up to 16.1 percent
  • Bone pain -- up to 15.8 percent
  • Headaches -- up to 15.4 percent.
     
Other common side effects (occurring in 5 to 15 percent of women) included:
 

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;
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