Irinotecan
Irinotecan Hydrochloride Solution for injection
What is this medicine?
IRINOTECAN (ir in oh TEE kan ) is a chemotherapy drug. It is used to treat colon and rectal cancer.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
blood disorders
dehydration
diarrhea
infection (especially a virus infection such as chickenpox, cold sores, or herpes)
liver disease
low blood counts, like low white cell, platelet, or red cell counts
recent or ongoing radiation therapy
an unusual or allergic reaction to irinotecan, sorbitol, other chemotherapy, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
breast-feeding
How should I use this medicine?
This drug is given as an infusion into a vein. It is administered in a hospital or clinic by a specially trained health care professional.
Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
What if I miss a dose?
It is important not to miss your dose. Call your doctor or health care professional if you are unable to keep an appointment.
What may interact with this medicine?
Do not take this medicine with any of the following medications:
atazanavir
certain medicines for fungal infections like itraconazole and ketoconazole
St. John's Wort
This medicine may also interact with the following medications:
dexamethasone
diuretics
laxatives
medicines for seizures like carbamazepine, mephobarbital, phenobarbital, phenytoin, primidone
medicines to increase blood counts like filgrastim, pegfilgrastim, sargramostim
prochlorperazine
vaccines
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medicine?
Your condition will be monitored carefully while you are receiving this medicine. You will need important blood work done while you are taking this medicine.
This drug may make you feel generally unwell. This is not uncommon, as chemotherapy can affect healthy cells as well as cancer cells. Report any side effects. Continue your course of treatment even though you feel ill unless your doctor tells you to stop.
In some cases, you may be given additional medicines to help with side effects. Follow all directions for their use.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.
Call your doctor or health care professional for advice if you get a fever, chills or sore throat, or other symptoms of a cold or flu. Do not treat yourself. This drug decreases your body's ability to fight infections. Try to avoid being around people who are sick.
This medicine may increase your risk to bruise or bleed. Call your doctor or health care professional if you notice any unusual bleeding.
Be careful brushing and flossing your teeth or using a toothpick because you may get an infection or bleed more easily. If you have any dental work done, tell your dentist you are receiving this medicine.
Avoid taking products that contain aspirin, acetaminophen, ibuprofen, naproxen, or ketoprofen unless instructed by your doctor. These medicines may hide a fever.
Do not become pregnant while taking this medicine. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information. Do not breast-feed an infant while taking this medicine.
What side effects may I notice from receiving this medicine?
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
low blood counts - this medicine may decrease the number of white blood cells, red blood cells and platelets. You may be at increased risk for infections and bleeding.
signs of infection - fever or chills, cough, sore throat, pain or difficulty passing urine
signs of decreased platelets or bleeding - bruising, pinpoint red spots on the skin, black, tarry stools, blood in the urine
signs of decreased red blood cells - unusually weak or tired, fainting spells, lightheadedness
breathing problems
chest pain
diarrhea
feeling faint or lightheaded, falls
flushing, runny nose, sweating during infusion
mouth sores or pain
pain, swelling, redness or irritation where injected
pain, swelling, warmth in the leg
pain, tingling, numbness in the hands or feet
problems with balance, talking, walking
stomach cramps, pain
trouble passing urine or change in the amount of urine
vomiting as to be unable to hold down drinks or food
yellowing of the eyes or skin
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
constipation
hair loss
headache
loss of appetite
nausea, vomiting
stomach upset
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Where should I keep my medicine?
This drug is given in a hospital or clinic and will not be stored at home.
Updated:  
March 21, 2017
Sources:  
U.S. FDA-approved Package Insert