Benlysta Side Effects

While most people have no problems when undergoing treatment with Benlysta, side effects can occur. Commonly reported ones include diarrhea, nausea, and insomnia. These problems are generally mild and easily treated. However, some reactions to Benlysta should be reported to your healthcare provider right away, including swollen glands, depression, and signs of an allergic reaction.

An Introduction to Benlysta Side Effects

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

Common Side Effects of Benlysta

Benlysta has been studied thoroughly in clinical trials. In these studies, the side effects that occurred in a group of people receiving Benlysta plus the usual lupus treatments were carefully documented and compared to another group given a placebo (an IV with no active ingredients) plus the usual lupus treatments. As a result, it was possible to see what side effects occurred and how they compared to the placebo.
In these studies, the most common side effects of Benlysta included:
  • Nausea -- in up to 15 percent of people
  • Diarrhea -- up to 12 percent
  • Fever -- up to 10 percent
  • Common cold symptoms -- up to 9 percent
  • Bronchitis -- up to 9 percent
  • Insomnia -- up to 7 percent
  • Pain in an arm or leg -- up to 6 percent.
Other common reactions, occurring in 3 to 5 percent of people, included:

Benlysta Medication Information

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