What is BELVIQ®?
BELVIQ is an FDA-approved prescription weight-loss medication that, when used with diet and exercise, can help some overweight† adults with a weight-related medical problem, or obese adults, lose weight and keep it off.
BELVIQ® can assist in managing your weight-loss.
In clinical trials, people taking BELVIQ were able to lose weight and maintain weight loss up to 2 years. In the 2-year study, almost half of the people who completed the first year continued on in year 2. All individuals regained some weight but remained below their starting weight.
Precautions & Warnings
- Pregnancy: Do not take BELVIQ if you are pregnant or planning to become pregnant, as weight loss offers no potential benefit during pregnancy and BELVIQ may harm your unborn baby.
- Serotonin Syndrome or Neuroleptic Malignant Syndrome (NMS)-like reactions: Before using BELVIQ, tell your doctor about all the medicines you take, especially medicines that treat depression, migraines, mental problems, or the common cold. These medicines may cause serious or life-threatening side effects if taken with BELVIQ. Call your doctor right away if you experience agitation, hallucinations, confusion, or other changes in mental status; coordination problems; uncontrolled muscle spasms; muscle twitching; restlessness; racing or fast heartbeat; high or low blood pressure; sweating; fever; nausea; vomiting; diarrhea; or stiff muscles.
- Valvular heart disease: Some people taking medicines like BELVIQ have had heart valve problems. Call your doctor right away if you experience trouble breathing; swelling of the arms, legs, ankles, or feet; dizziness, fatigue, or weakness that will not go away; or fast or irregular heartbeat. Before taking BELVIQ, tell your doctor if you have or have had heart problems.
- Changes in attention or memory: BELVIQ may slow your thinking. You should not drive a car or operate heavy equipment until you know how BELVIQ affects you.
- Mental problems: Taking too much BELVIQ may cause hallucinations, a feeling of being high or in a very good mood, or feelings of standing outside your body.
- Depression or thoughts of suicide: Call your doctor right away if you notice any mental changes, especially sudden changes in your mood, behaviors, thoughts, or feelings, or if you have depression or thoughts of suicide.
- Low blood sugar: Weight loss can cause low blood sugar in people taking medicines for type 2 diabetes, such as insulin or sulfonylureas. Blood sugar levels should be checked before and while taking BELVIQ. Changes to diabetes medication may be needed if low blood sugar develops.
- Painful erections: If you have an erection lasting more than 4 hours while on BELVIQ, stop taking BELVIQ and call your doctor or go to the nearest emergency room right away.
- Slow heartbeat: BELVIQ may cause your heart to beat slower.
- Decreases in blood cell count: BELVIQ may cause your red and white blood cell counts to decrease.
- Increase in prolactin: BELVIQ may increase the amount of a hormone called prolactin. Tell your doctor if your breasts begin to make milk or a milky fluid, or if you are a male and your breasts increase in size.
- Most common side effects in patients without diabetes: Headache, dizziness, fatigue, nausea, dry mouth, and constipation.
- Most common side effects in patients with diabetes: Low blood sugar, headache, back pain, cough, and fatigue.
- Nursing: BELVIQ should not be taken while breastfeeding.
- Drug interactions: Before taking BELVIQ, tell your doctor if you take medicines for depression, migraines, or other medical conditions, such as: triptans; medicines used to treat mood, anxiety, psychotic or thought disorders, including tricyclics, lithium, selective serotonin reuptake inhibitors, selective serotonin-norepinephrine reuptake inhibitors, monoamine oxidase inhibitors, or antipsychotics; cabergoline; linezolid (an antibiotic); tramadol; dextromethorphan (an over-the-counter (OTC) common cold/cough medicine); OTC supplements such as tryptophan or St. John’s Wort; or erectile dysfunction medicines.
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BELVIQ is a federally controlled substance (CIV) because it may be abused or lead to drug dependence.
For more information about BELVIQ®, talk to your doctor.
You are encouraged to report negative side effects of prescription drugs to the FDA.
Visit www.fda.gov/medwatch or call 1-800-FDA-1088.
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