What are the possible side effects of BELVIQ?
BELVIQ may cause serious side effects, including:
Serotonin Syndrome or Neuroleptic Malignant Syndrome (NMS)-like reactions.
BELVIQ and certain medicines for depression, migraine, the common cold, or other medical problems may affect each other causing serious or life-threatening side effects. Call your doctor right away if you start to have any of the following symptoms while taking BELVIQ:
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mental changes such as agitation, hallucinations, confusion, or other changes in mental status
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coordination problems, uncontrolled muscle spasms, or muscle twitching (overactive reflexes)
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restlessness
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racing or fast heart beat, high or low blood pressure
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sweating or fever
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nausea, vomiting, or diarrhea
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muscle rigidity (stiff muscles)
• Valvular heart disease. Some people taking medicines like BELVIQ have had problems with the valves in their heart. Call your doctor right away if you have any of the following symptoms while taking BELVIQ:
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trouble breathing
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swelling of the arms, legs, ankles, or feet
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dizziness, fatigue, or weakness that will not go away
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fast or irregular heartbeat
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Changes in your attention or memory.
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Mental problems. Taking BELVIQ in high doses may cause psychiatric problems such as:
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hallucinations
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feeling high or in a very good mood (euphoria)
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feelings of standing next to yourself or out of your body (disassociation)
Depression or thoughts of suicide. You should pay attention to any mental changes, especially sudden changes, in your mood, behaviors, thoughts, or feelings. Call your healthcare provider right away if you have any mental changes that are new, worse, or worry you.
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Low blood sugar (hypoglycemia) in people with type 2 diabetes mellitus who also take medicines used to treat type 2 diabetes mellitus. Weight loss can cause low blood sugar in people with type 2 diabetes mellitus who also take medicines used to treat type 2 diabetes mellitus (such as insulin or sulfonylureas). You should check your blood sugar before you start taking BELVIQ and while you take BELVIQ.
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Painful erections (priapism). The medicine in BELVIQ can cause painful erections that last more than 6 hours. If you have an erection lasting more than 4 hours whether it is painful or not, stop using BELVIQ and call your doctor or go to the nearest emergency room right away.
Reference ID: 3151563
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Slow heart beat. BELVIQ may cause your heart to beat slower. Tell your doctor if you have a history of your heart beating slow or heart block.
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Decreases in your blood cell count. BELVIQ may cause your red and white blood cell count to decrease. Your doctor may do tests to check your blood cell count while you are taking BELVIQ.
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Increase in prolactin. The medicine in BELVIQ may increase the amount of a certain hormone your body makes called prolactin. Tell your doctor if your breasts begin to make milk or a milky discharge or if you are a male and your breasts begin to increase in size.
The most common side effects of BELVIQ include:
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headache
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dizziness
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fatigue
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nausea
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dry mouth
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constipation
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cough
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low blood sugar (hypoglycemia) in patients with diabetes
• back pain Tell to your doctor if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of BELVIQ. For more information, ask your doctor or
pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1800-FDA-1088.