Belviq (generic: lorcaserin) is a prescription weight loss medicine used to treat obese or overweight adults who have at least one medical problem related to their weight. It is believed that Belviq decreases appetite and makes you feel full faster by binding to, and activating certain serotonin receptors in the brain. Serotonin is a neurotransmitter, a chemical in the brain, that has various functions. These include the regulation of mood, appetite, sleep, as well as other functions.
Belviq is a prescription weight loss medication for obese or overweight adults who have at least one weight related medical problem such as diabetes, high cholesterol, or high blood pressure. Belviq is intended to be used with a low-calorie diet and exercise.
This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.
Belviq may cause serious side effects. See "Drug Precautions".
- nausea (upset stomach)
- dry mouth
- low blood sugar (hypoglycemia) in patients with diabetes
- back pain
- upper respiratory tract infection
- symptoms of the common cold
Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:
- medicines for depression
- migraine medicines such as triptans
- medicines used to treat mood, anxiety, psychotic or thought disorders, including tricyclics, lithium, selective serotonin uptake inhibitors (SSRIs), selective serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), or antipsychotics
- linezolid, an antibiotic
- dextromethorphan, an over-the-counter medicine used to treat the common cold or cough
Do not take Belviq if you are allergic to any ingredient in it. See "Forms of Medication".
Do not take Belviq if you are pregnant or planning to become pregnant. It may harm your unborn baby.
Call your doctor right away if you have any mental changes that are new, worse, or worry you such as sudden changes in mood, behaviors, thoughts or feelings.
- mental changes such as agitation, hallucinations, confusion, or other changes in mental status
- coordination problems, uncontrolled muscle spasms, or muscle twitching (overactive reflexes)
- racing or fast heart beat, high or low blood pressure
- sweating or fever
- nausea, vomiting, or diarrhea
- muscle rigidity (stiff muscles)
Belviq may cause heart valve problems. Call your doctor right away if you have any of the following symptoms while taking Belviq:
- trouble breathing
- swelling of the arms, legs, ankles, or feet
- dizziness, fatigue, or weakness that will not go away
- fast or irregular heartbeat
Taking Belviq in high doses may cause mental problems such as:
- feeling high or in a very good mood (euphoria)
- feelings of standing next to yourself or out of your body (disassociation)
Belviq can cause slowed thinking and problems with attention. Do not drive, operate heavy machinery, or perform activities that require mental alertness until you know how Belviq affects you.
Follow dietary (food) recommendations made by your doctor and dietitian which should include a healthy diet. There are no specific foods to avoid while taking Belviq.
Before you receive Belviq, tell your doctor about all of your medical conditions including if you:
- have heart problems such as congestive heart failure, heart valve problems, slow heart beat or heart block
- have diabetes
- have a condition such as sickle cell anemia, multiple myeloma, or leukemia
- have a deformed penis, Peyronie’s disease, or ever had an erection that lasted more than 4 hours
- have kidney problems
- have liver problems
Tell your doctor if you are pregnant or plan to become pregnant. Belviq should not be used during pregnancy. Women should not try to lose weight during pregnancy, even obese or overweight women.
Tell your doctor if you are breastfeeding or plan to breastfeed. It is not known in Belviq is excreted in human breast milk or if it will harm your nursing baby.
Belviq comes as a tablet to be taken by mouth, with or without food. It is usually taken twice a day. Try to take your doses at the same time each day. Take Belviq exactly as prescribed. Do not take more than your doctor prescribes.
Take Belviq exactly as prescribed. Follow the directions on your prescription label carefully. The recommended Belviq dose is 10 mg twice daily.
If you take too much Belviq, call your local Poison Control Center or seek emergency medical attention right away.
Belviq is available as 10 mg film-coated tablets.
Store Belviq at room temperature away from excess light and moisture.
Keep this and all medicines out of the reach of children.