According to the U.S. Food and Drug Administration (FDA), the weight-loss medication Belviq (lorcaserin) may increase the risk of cancer. A five-year study found a higher incidence of lung, pancreatic, colorectal, and other cancers in patients who took Belviq.

Belviq is a weight-loss drug that was originally manufactured by Switzerland-based Arena Pharmaceuticals, before Eisai Inc. acquired it in January 2017. Eisai made and sold the drug until February 2020, when Belviq was pulled from the global market in light of evidence that it may increase the risk of cancer.

On June 27, 2012, the U.S. Food and Drug Administration (FDA) approved Belviq for use as an addition to diet and exercise for obese adults and overweight adults with a comorbid condition, such as type 2 diabetes or hypertension. The drug hit the market the following year but failed to gain traction among consumers.

In July 2016, the FDA approved Belviq XR, a once-a-day, slow-release version of Belviq. Six months later, Eisai Inc. which had been a marketing partner of the drug acquired it from Arena Pharmaceuticals for $23 million. Eisai reported $31.5 million in U.S. Belviq sales and $42.2 million in Japanese sales for the 2017 fiscal year.

In the summer of 2018, a study of 12,000 patients concluded that there was no increased cardiovascular risk for those who took Belviq. But in January 2020, the FDA announced that it was exploring a possible link between Belviq and cancer. The next month, the agency revealed that the same study of 12,000 patients had found a higher incidence of cancer in the patients who took Belviq (as opposed to a placebo). The FDA issued a full recall of all Belviq and Belviq XR products, a recall with which Eisai complied. Eisai is now pulling the drug from shelves worldwide.

If you or a loved one has been diagnosed with cancer after taking Belviq, please contact us for a free, no-risk case evaluation. You could recover compensation through a Belviq lawsuit.

How Does Belviq Work?

Belviq activates the serotonin 2c receptor in the brain. As a result, a person may feel more full after eating a smaller amount of food, leading to weight loss (when paired with exercise and dietary changes).

A study of 8,000 overweight and obese patients found that those who took Belviq for up to one year lost 3 to 3.7% more weight on average.

What Are Belviq’s Approved Uses?

Belviq has been pulled from the market, but from June 2012 to January 2020 it was approved for use as an addition to diet and exercise for obese adults and overweight adults with a comorbid condition (e.g., type 2 diabetes, hypertension).

What Are Belviq’s Side Effects?

In addition to allergic reactions (hives; difficulty breathing; swelling of the face, mouth, or throat), Belviq may cause the following side effects:

  • Dry eyes or mouth
  • Headache
  • Fatigue
  • Back pain
  • Fever
  • Nausea/vomiting
  • Mood swings
  • Suicidal thoughts
  • Blurred vision
  • Memory/concentration problems
  • Quickened pulse
  • Dizziness
  • Agitation
  • Confusion
  • Hallucinations
  • Swollen breasts
  • Nipple discharge
  • Feeling as if you’re outside your body

Why Did the FDA Recall Belviq?

A five-year, double-blind study of 12,000 patients found a higher incidence of cancer in patients taking Belviq. The FDA stated: “A range of cancer types was reported, with several different types of cancers occurring more frequently in the lorcaserin group, including pancreatic, colorectal, and lung.”

Who Can File a Belviq Lawsuit?

People who have taken Belviq and been diagnosed with cancer may be entitled to compensation for medical costs, pain and suffering, lost wages, and other damages. They should speak with a personal injury attorney who may be able to help them recover what they are owed.

These cases are time-sensitive, so it’s important that impacted consumers contact an attorney as soon as possible.