Generic Name: lorcaserin, Oral tablet

Belviq

All Brands

  • Belviq
SECTION 1 of 4

Highlights for lorcaserin

Oral tablet
1
LORCASERIN (lor ca SER in) is used to promote and maintain weight loss in obese patients. This medicine should be used with a reduced calorie diet and, if appropriate, an exercise program.
2 3 4
Talk to your healthcare provider if you have any of these conditions.
5
Know what to watch for and get tips for reducing your risks while taking this drug.
SECTION 2 of 4

lorcaserin Side Effects

Oral tablet

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • abnormal production of milk
  • breast enlargement in both males and females
  • breathing problems
  • changes in emotions or moods
  • changes in vision
  • confusion
  • erection lasting more than 4 hours
  • fast or irregular heart beat
  • feeling faint or lightheaded, falls
  • fever or chills, sore throat
  • hallucination, loss of contact with reality
  • high or low blood pressure
  • menstrual changes
  • restlessness
  • seizures
  • slow or irregular heartbeat
  • stiff muscles
  • sweating
  • suicidal thoughts or other mood changes
  • tremors
  • trouble walking
  • unusually weak or tired
  • vomiting

Side effects that usually do not require medical attention (Report these to your doctor or health care professional if they continue or are bothersome.):

  • back pain
  • constipation
  • cough
  • dizziness
  • dry mouth
  • low blood sugar if you have diabetes (ask your doctor or healthcare professional for a list of these symptoms)
  • nausea
  • tiredness
SECTION 3 of 4

lorcaserin May Interact with Other Medications

Oral tablet
  • cabergoline
  • certain medicines for depression, anxiety, or psychotic disturbances
  • certain medicines for erectile dysfunction
  • certain medicines for migraine headache like almotriptan, eletriptan, frovatriptan, naratriptan, rizatriptan, sumatriptan, zolmitriptan
  • dextromethorphan
  • linezolid
  • MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
  • medicines for diabetes
  • orlistat
  • tramadol
  • St. John's Wort
  • stimulant medicines for attention disorders, weight loss, or to stay awake
Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions. This information is not a substitute for medical advice. Always speak with your healthcare provider about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking.
SECTION 4 of 4

How to Use lorcaserin

Oral tablet

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take it with or without food. Take your medicine at regular intervals. Do not take it more often than directed. Do not stop taking except on your doctor's advice.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

Overdosage: If you think you've taken too much of this medicine contact a poison control center or emergency room at once.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • anatomical deformation of the penis, Peyronie's disease, or history of priapism (painful and prolonged erection)
  • diabetes
  • heart disease
  • history of blood diseases, like sickle cell anemia or leukemia
  • history of irregular heartbeat
  • kidney disease
  • liver disease
  • suicidal thoughts, plans, or attempt; a previous suicide attempt by you or a family member
  • an unusual or allergic reaction to lorcaserin, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding
What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What should I watch for while using this medicine?

This medicine is intended to be used in addition to a healthy diet and appropriate exercise. The best results are achieved this way. Do not increase or in any way change your dose without consulting your doctor or health care professional. Your doctor should tell you to stop taking this medicine if you do not lose a certain amount of weight within the first 12 weeks of treatment.

Visit your doctor or health care professional for regular checkups. Your doctor may order blood tests or other tests to see how you are doing.

Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you.

This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.

Patients and their families should watch out for worsening depression or thoughts of suicide. Also watch out for sudden changes in feelings such as feeling anxious, agitated, panicky, irritable, hostile, aggressive, impulsive, severely restless, overly excited and hyperactive, or not being able to sleep. If this happens, especially at the beginning of treatment or after a change in dose, call your health care professional.

Contact you doctor or health care professional right away if the erection lasts longer than 4 hours or if it becomes painful. This may be a sign of serious problem and must be treated right away to prevent permanent damage.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.

What does the pill look like?

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Last Updated: July 3, 2012

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