This information from Lexicomp® explains what you need to know about this medication, including what it’s used for, how to take it, its side effects, and when to call your healthcare provider.
Brand Names: US
Alli [OTC]; Xenical
Brand Names: Canada
What is this drug used for?
- It is used to help with weight loss in certain people.
What do I need to tell the doctor BEFORE my child takes this drug?
- If your child is allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell the doctor about the allergy and what signs your child had.
- If your child has any of these health problems: Gallbladder disease, malabsorption syndrome, or poor eating habits.
If your child is pregnant:
- Do not give this drug to your child during pregnancy.
This is not a list of all drugs or health problems that interact with this drug.
Tell the doctor and pharmacist about all of your child’s drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe to give this drug with all of your child’s other drugs and health problems. Do not start, stop, or change the dose of any drug your child takes without checking with the doctor.
What are some things I need to know or do while my child takes this drug?
- Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.
- Drugs used to treat seizures may not work as well while your child takes this drug. Call the doctor right away if your child’s seizures happen more often or get worse while taking this drug.
- Liver problems have happened with this drug. Sometimes these problems have been severe, leading to liver transplant or death. Liver problems may happen in people with or without liver disease. Talk with the doctor.
- If your child has high blood sugar (diabetes) and takes drugs to lower blood sugar, talk with the doctor. Weight loss may raise the chance of low blood sugar if your child takes drugs to lower blood sugar. Call the doctor right away if your child has signs of low blood sugar like dizziness, headache, feeling sleepy or weak, shaking, a fast heartbeat, confusion, hunger, or sweating.
- Do not give more than the doctor told you to give. Giving more than you are told may raise the chance of very bad side effects.
If your child is breast-feeding a baby:
- Tell the doctor if your child is breast-feeding a baby. You will need to talk about any risks to the baby.
What are some side effects that I need to call my child’s doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child’s doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of kidney problems like unable to pass urine, change in how much urine is passed, blood in the urine, or a big weight gain.
- Signs of liver problems like dark urine, tiredness, decreased appetite, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- Signs of gallstones like sudden pain in the upper right belly area, right shoulder area, or between the shoulder blades; yellow skin or eyes; or fever with chills.
- Back pain, belly pain, or blood in the urine. May be signs of a kidney stone.
- Black, tarry, or bloody stools.
- Pain when passing urine.
- Passing urine more often.
- Very bad groin or thigh pain.
What are some other side effects of this drug?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your child’s doctor or get medical help if any of these side effects or any other side effects bother your child or do not go away:
- Stomach pain or diarrhea.
- Not able to control stools.
- Gas with discharge, oily spotting, and feeling the need to go to the bathroom.
- Fatty or oily stools.
- Upset stomach.
- Feeling tired or weak.
- Period (menstrual) changes.
- Signs of a common cold.
These are not all of the side effects that may occur. If you have questions about side effects, call your child’s doctor. Call your child’s doctor for medical advice about side effects.
You may report side effects to your national health agency.
How is this drug best given?
Give this drug as ordered by your child’s doctor. Read all information given to you. Follow all instructions closely.
- Give this drug with each main meal that has fat in it or up to 1 hour after the meal. You may skip a dose if your child misses a meal or if the meal does not have fat in it.
- If your child takes vitamins, give them at least 2 hours before or 2 hours after this drug. Bedtime may be a good time for your child to take vitamins.
- This drug may prevent other drugs taken by mouth from getting into the body. If your child takes other drugs by mouth, you may need to give them at some other time than this drug. Talk with the doctor.
- Have your child follow the diet and workout plan your child’s doctor told you about.
What do I do if my child misses a dose?
- Skip the missed dose and go back to your child’s normal time.
- Do not give 2 doses at the same time or extra doses.
How do I store and/or throw out this drug?
- Store at room temperature in a dry place. Do not store in a bathroom.
- Keep lid tightly closed.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
General drug facts
- If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
- Do not share your child’s drug with others and do not give anyone else’s drug to your child.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your child’s doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
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