Lorcaserin is used to help adults who are obese or who are overweight and have weight-related medical problems to lose weight and keep from gaining back that weight. Lorcaserin must be used along with a reduced calorie diet and an exercise plan. Lorcaserin is in a class of medications called serotonin receptor agonists. It works by increasing feelings of fullness so that less food is eaten.
Lorcaserin comes as a tablet to take by mouth. It is usually taken with or without food twice a day. Take lorcaserin at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take lorcaserin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Lorcaserin may be habit forming. Do not take a larger dose, take it more often, or take it for a longer period of time than prescribed by your doctor.
If you do not lose a certain amount of weight during the first 12 weeks of your treatment, it is not likely that you will benefit from taking lorcaserin. Your doctor may tell you to stop taking lorcaserin if you do not lose enough weight during the first 12 weeks of your treatment.
Lorcaserin will help control your weight only if you continue to take it. Do not stop taking lorcaserin without talking to your doctor.
Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking lorcaserin, call your doctor immediately. Lorcaserin may harm your unborn baby.
Unless your doctor tells you otherwise, continue your normal diet.
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
pain in the back or muscles
difficulty falling asleep or staying asleep
difficult, painful, or frequent urination
blurred vision or other vision changes
hallucinations (seeing things or hearing voices that are not there)
difficulty with coordination
muscle spasms, stiffness, or twitching
fast, slow, or irregular heartbeat
swelling of the hands, arms, feet, or legs
difficulty paying attention or remembering information
thinking about harming or killing yourself or planning or trying to do so
feeling high or unusually happy
feeling as though you are outside of your body
erection that lasts longer than 4 hours
discharge from the breast
breast enlargement in males
Lorcaserin may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
feeling high or unusually happy
hallucinations (seeing things or hearing voices that do not exist)
Keep all appointments with your doctor and the laboratory. Your doctor may order certain lab tests to check your body's response to lorcaserin.
Do not let anyone else take your medication. Lorcaserin is a controlled substance. Prescriptions may be refilled only a limited number of times; ask your pharmacist if you have any questions.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Revised - 05/15/2013
AHFS® Consumer Medication Information. © Copyright, 2015. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.