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Belviq XR (Generic Lorcaserin)

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Why is this medication prescribed?

Belviq XR is a medication prescribed for weight management in adults who are overweight or obese, particularly those with weight-related medical conditions. It’s typically used in conjunction with a reduced-calorie diet and increased physical activity.

Belviq XR works by affecting certain neurotransmitters in the brain that control appetite, helping to reduce food intake and promote a feeling of fullness.

How should this medicine be used?

Here’s how Belviq XR is generally used:

  • Dosage: The typical starting dose is 20 mg once daily. However, your healthcare provider may adjust the dosage based on your response to the medication and any side effects you experience.
  • Administration: It’s usually taken by mouth, with or without food.
  • Duration: Belviq XR should be taken as directed by your healthcare provider. Don’t take it for longer or shorter periods than recommended.
  • Consistency: Try to take it at the same time each day to maintain consistent levels of the medication in your body.
  • Follow-up: Your healthcare provider may monitor your progress regularly to assess the effectiveness of the medication and to manage any potential side effects.

It’s crucial to follow your healthcare provider’s instructions precisely when taking Belviq XR and to not exceed the prescribed dosage. If you have any questions or concerns about how to use Belviq XR, be sure to discuss them with your healthcare provider.

Other uses for this medicine

Belviq XR (lorcaserin extended-release) is primarily prescribed for weight management in adults who are obese or overweight with weight-related medical conditions. However, it’s essential to note that using medications for off-label purposes should be done only under the guidance and supervision of a healthcare professional.

What special precautions should I follow?

Regarding special precautions for using Belviq XR, here are some important points to consider:

  • Medical History: Inform your healthcare provider about your complete medical history, including any allergies, pre-existing conditions, and medications (prescription or over-the-counter) you are currently taking. This information can help your healthcare provider determine if Belviq XR is suitable for you and if any precautions are necessary.
  • Pregnancy and Breastfeeding: If you are pregnant, planning to become pregnant, or breastfeeding, discuss the risks and benefits of using Belviq XR with your healthcare provider. The safety of Belviq XR during pregnancy and breastfeeding has not been established, so it’s essential to weigh the potential risks to the fetus or infant against the benefits of treatment.
  • Serotonin Syndrome: Belviq XR works by targeting serotonin receptors in the brain. Taking Belviq XR along with other medications that increase serotonin levels (such as certain antidepressants or migraine medications) can increase the risk of serotonin syndrome, a potentially life-threatening condition. Inform your healthcare provider about all medications you are taking to avoid this risk.
  • Valvular Heart Disease and Pulmonary Hypertension: Belviq XR should be used with caution in individuals with a history of valvular heart disease or pulmonary hypertension. In clinical trials, there were reports of cardiac valvulopathy, including cases requiring surgery. If you have a history of these conditions, your healthcare provider will weigh the potential risks and benefits of using Belviq XR.
  • Psychiatric Effects: Belviq XR may cause psychiatric effects such as depression, suicidal thoughts, or changes in mood or behavior. If you experience any of these symptoms while taking Belviq XR, contact your healthcare provider immediately.
  • Driving and Operating Machinery: Belviq XR may cause dizziness or fatigue in some individuals. Avoid driving or operating machinery until you know how Belviq XR affects you.

Always follow your healthcare provider’s instructions and any warnings provided with the medication. If you have any concerns or questions about using Belviq XR, don’t hesitate to discuss them with your healthcare provider.

What special dietary instructions should I follow?

Regarding special dietary instructions, there are no specific dietary restrictions associated with Belviq XR. However, it’s generally recommended to follow a reduced-calorie diet and engage in increased physical activity while taking Belviq XR to optimize weight loss.

What should I do if I forget a dose?

If you forget to take a dose of Belviq XR, take it as soon as you remember. However, if it’s almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you’re unsure about what to do, consult your healthcare provider or pharmacist for guidance.

What side effects can this medication cause?

Belviq XR (lorcaserin extended-release) may cause side effects in some individuals. Common side effects may include:

  • Headache: Mild to moderate headaches are common, especially during the first few days or weeks of treatment.
  • Nausea: Some people may experience feelings of nausea or gastrointestinal discomfort.
  • Fatigue: Belviq XR might cause feelings of tiredness or fatigue in some individuals.
  • Dizziness: Some individuals may experience dizziness or lightheadedness, especially when standing up quickly.
  • Dry Mouth: Belviq XR can sometimes cause dryness in the mouth, leading to thirst or discomfort.
  • Constipation: Occasionally, individuals may experience constipation as a side effect of Belviq XR.
  • Low Blood Sugar (Hypoglycemia): Some people may experience episodes of low blood sugar, especially if they are taking other medications for diabetes or have diabetes.
  • Back Pain: Back pain has been reported as a side effect in some individuals taking Belviq XR.
  • Cough: Belviq XR might cause a cough in some people.
  • Upper Respiratory Tract Infection: There may be an increased risk of upper respiratory tract infections in individuals taking Belviq XR.

It’s essential to note that not everyone will experience these side effects, and some individuals may experience side effects not listed here. If you experience any persistent or severe side effects while taking Belviq XR, contact your healthcare provider for further evaluation and guidance. Additionally, if you have any concerns about side effects or notice any changes in your health while taking Belviq XR, discuss them with your healthcare provider.

What should I know about storage and disposal of this medication?

Storage and disposal of Belviq XR:


  • Store Belviq XR at room temperature between 68°F to 77°F (20°C to 25°C).
  • Keep it in its original packaging and away from moisture and heat.
  • Keep Belviq XR out of reach of children and pets.


  • Dispose of any unused or expired Belviq XR properly according to local regulations or guidelines.
  • Do not flush medications down the toilet or pour them into a drain unless instructed to do so.
  • Consult your healthcare provider or pharmacist for guidance on how to safely dispose of Belviq XR.

In case of emergency/overdose

  • In case of an overdose of Belviq XR, seek emergency medical attention or contact your local poison control center immediately.
  • Symptoms of overdose may include confusion, hallucinations, rapid heartbeat, sweating, nausea, vomiting, diarrhea, and fainting.

What other information should I know?

  • Belviq XR is not a substitute for a healthy diet and exercise. It should be used as part of a comprehensive weight management plan.
  • Your healthcare provider may periodically monitor your heart rate and blood pressure while you are taking Belviq XR.
  • Inform your healthcare provider about all medications, supplements, and herbal products you are taking, as they may interact with Belviq XR.
  • Attend all scheduled appointments with your healthcare provider for monitoring and follow-up.
  • Do not share Belviq XR with others, even if they have similar symptoms or conditions.
  • If you have any questions or concerns about Belviq XR or your treatment plan, discuss them with your healthcare provider or pharmacist.

By following these guidelines and staying informed about Belviq XR, you can ensure its safe and effective use as part of your weight management plan.

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