• Required field
  • Generic Name: (lorcaserin hydrochloride)
    Other Brands: N/A
  • Last Revised: 08/2016
    • What is this medication and its most common uses?

      Belviq XR is a medicine used with a reduced-calorie diet and increased physical activity for weight loss in people who are obese or are overweight and have weight-related medical problems. Belviq XR is an extended-release medicine (a type of tablet that releases medicine into your body throughout the day).

      Belviq XR is a federally controlled substance because it may be abused and lead to drug dependence.

    • What should I know when beginning and continuing on this medication?

      How does this medication work?

      Belviq XR is thought to work by targeting a hunger receptor in the brain, thereby helping you feel satisfied with less food.

      What are the beneficial effects of this medication and when should I begin to have results?

      What: Belviq XR, along with diet and exercise, may improve health risk factors such as high blood pressure, high blood sugar, and high cholesterol levels.

      When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's instructions. It is important that you take Belviq XR exactly as your healthcare provider has prescribed.

      How do I know it is working?

      You may start to notice a reduction in your weight after you start taking Belviq XR. This is a good indicator that your medication is working. Your healthcare provider may ask you questions from time to time to assess how well Belviq XR is working.

    • What are the possible side effects of this medication?

      The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.

      More common side effects in people without diabetes may include: headache, dizziness, tiredness, nausea, dry mouth, constipation.

      More common side effects in people with diabetes may include: low blood sugar, headache, back pain, cough, tiredness.

      Less common side effects of Belviq XR may include:

      Serotonin syndrome (a potentially life-threatening drug reaction that causes the body to have too much serotonin, a chemical produced by the nerve cells) or neuroleptic malignant syndrome-like reactions, with symptoms such as mental status changes (such as agitation, hallucinations, or confusion), coordination problems, uncontrolled muscle spasms, muscle twitching, restlessness, racing or fast heartbeat, high or low blood pressure, sweating or fever, nausea, vomiting, diarrhea, or muscle rigidity.

      Valvular heart disease, with symptoms such as trouble breathing; swelling of the arms, legs, ankles, or feet; dizziness, tiredness, or weakness that will not go away; or fast or irregular heartbeat.

      Mental health problems, including hallucinations, feeling high or in a very good mood, feelings of standing next to yourself or out of your body, or depression or thoughts of suicide. Pay attention to any mental changes, especially sudden changes in your mood, behaviors, thoughts, or feelings.

      Low blood pressure in people with type 2 diabetes who also take medicines to treat their diabetes. Weight loss can cause low blood sugar in people with type 2 diabetes who also take medicines to treat their diabetes.

      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 XR and call your healthcare provider or go to the nearest emergency room right away.

      Decreased red and white blood cell counts. Your healthcare provider may do tests to check your blood cell counts while you are taking Belviq XR.

      Increase in prolactin (a certain hormone your body makes), with symptoms such as milky discharge from your breasts or if you are a male and your breasts begin to increase in size.

      Belviq XR may also cause your heart to beat slower.

    • Who should not take this medication?

      Do not take Belviq XR if you are allergic to it or any of its ingredients.

      Do not take Belviq XR if you are pregnant or planning to become pregnant.

    • What should I tell my healthcare provider before I take the first dose of this medication?

      Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Belviq XR. Also, talk to your healthcare provider about your complete medical history, especially if you 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 or liver problems; have or have had heart problems (including congestive heart failure, heat valve problems, or a slow heart beat or heart block); or are pregnant, breastfeeding, or planning to become pregnant.

    • What is the usual dosage?

      The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.

      Adults: The recommended dose is 20 milligrams once a day.

    • How should I take this medication?

      Take Belviq XR exactly as prescribed by your healthcare provider. Do not change your dose or stop taking Belviq XR without first talking to your healthcare provider.

      Swallow Belviq XR tablets whole; do not chew, crush, or divide the tablets.

      Take Belviq XR with or without food.

      Stay on your prescribed diet and exercise program while you are taking Belviq XR.

      Your healthcare provider should tell you to stop taking Belviq XR if you do not lose a certain amount of weight within the first 12 weeks of treatment.

    • What should I avoid while taking this medication?

      Do not drive a car, operate heavy machinery, or do other dangerous activities until you know how Belviq XR affects you.

    • What are the possible food and drug interactions associated with this medication?

      If Belviq XR is taken with certain other drugs, the effects of either could be increased, decreased, or altered. Belviq XR may interact with numerous medications. Therefore, it is very important that you tell your healthcare provider about any other medications you are taking.

    • May I receive this medication if I am pregnant or breastfeeding?

      Do not take Belviq XR during pregnancy or breastfeeding. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

    • What should I do if I miss a dose of this medication?

      If you miss a dose of Belviq XR, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

    • How should I store this medication?

      Store at room temperature.

    • Who should I contact in case of emergency or overdose?
      back to top

      In the event of a medical emergency call your doctor or 9-1-1 immediately. In the event of overdose, call your doctor or poison control for further instructions.
      National Poison Control#: Call 1-800-222-1222

      This PDR+ drug information has been developed by the Physicians’ Desk Reference Network (PDRN), a source of medication information trusted by doctors for over 65 years.

      This monograph summarizes the most important information about your medication and does not cover all the information you may need. If you have any questions or concerns or want to learn more about your medication, ask your healthcare provider; he/she will be able to provide answers to your questions. This medication should only be used by the patient for whom it was prescribed and should not be shared with other people.
    • Additional patient resources.
      back to top Use your PDR® Pharmacy Discount Card when you or a family member fills a prescription and ask for your PDR® Discount every
  • Terms of Service

    This discount plan is NOT insurance or a Medicare prescription drug plan. The plan is not intended as a substitute for insurance and does not meet creditable coverage requirements under state or federal law. The plan provides discounts at participating pharmacies on certain pharmaceutical supplies, prescription drugs, or medical equipment and supplies. The range of discounts will vary depending on the products received. Members are obligated to pay the pharmacy the entire amount of the discounted rate for such products at the point of sale. The plan does not pay pharmacies for products provided to members. No enrollment or periodic fees apply. The pharmacy may pay the plan a fee from amounts the pharmacy collects from the member. The discount plan organization is ProCare Pharmacy Benefit Manager, Inc.,1267 Professional Parkway, ProCare Office Park, Gainesville, GA 30507, 1-888-299-5383. Customer service is provided by PDR, LLC., 5 Paragon Drive, Montvale, NJ, 07645, 1-800-232-7379, www.pdr.net/DiscountCard, customerservice@pdr.net.