Common Brand Name(s): Cytoxan , Procytox
Important: How To Use This Information
This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Cyclophosphamide is used to treat various types of cancer. It is a chemotherapy drug that works by slowing or stopping cell growth.
Cyclophosphamide also works by decreasing your immune system's response to various diseases. It is used to treat a certain type of kidney disease in children after other treatments have not worked.
This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This medication may also be used for various conditions such as lupus and multiple sclerosis.
How To Use
This medication is usually given by injection into a vein by a health care professional. The dosage is based on your medical condition, weight, response to treatment, and other treatments (such as other chemotherapy drugs, radiation) you may be receiving. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During treatment with this medication, it is important that you take in more fluids than usual and pass urine frequently to help avoid kidney and bladder side effects. Intravenous fluids should be given with this medication. Also, ask your doctor how much fluid you should drink and how often to empty your bladder each day, and follow these instructions carefully.
Nausea, vomiting, loss of appetite, stomach ache, diarrhea, or darkening of the skin/nails may occur. Nausea and vomiting can be severe. In some cases, drug therapy may be necessary to prevent or relieve nausea and vomiting. Changes in diet such as eating several small meals or limiting activity may help lessen some of these effects. If these effects persist or worsen, notify your doctor or pharmacist promptly.
Although these effects are uncommon, immediately report any pain, swelling, or redness at the injection site.
Temporary hair loss may occur. Hair growth should return after treatment has ended or may even return during treatment. However, new hair may have a different color or texture.
People using this medication may have serious side effects. However, your doctor has prescribed this drug because he or she has judged that the benefit to you is greater than the risk of side effects. Careful monitoring by your doctor may decrease your risk.
Tell your doctor right away if you have any serious side effects, including:
- signs of kidney or bladder problems (such as change in the amount of urine, pink/bloody urine)
- mouth sores
- joint pain
- easy bruising/bleeding
- stopping of menstrual periods
- existing wounds that are slow healing
- black/bloody stools
- severe stomach/abdominal pain
- yellowing eyes or skin
- dark urine
- mental/mood changes
- muscle weakness/spasm
This medication may rarely cause very serious effects on the heart, especially when used in high doses, or in combination with radiation treatment or certain other chemotherapy drugs (e.g., doxorubicin). Get medical help right away if you develop:
- chest pain
- jaw/left arm pain
- trouble breathing
- irregular heartbeat
- symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain)
This medication can lower the body's ability to fight an infection. Notify your doctor promptly if you develop any signs of an infection such as fever, chills or persistent sore throat.
Cyclophosphamide may lessen the chance of having children in both men and women. Sterility is usually temporary with this medication, but can be permanent in some cases. Consult your doctor for more details.
Although cyclophosphamide is used to treat cancer, in some patients it may increase the risk of developing another form of cancer, sometimes months to years after treatment. Consult your doctor for more details. It is important to be closely monitored by your doctor during treatment. You should also see your doctor regularly after treatment is finished. Tell your doctor right away if you develop:
- unusual growths or lumps
- swollen glands
- unexplained or sudden weight loss
- night sweats
- pain in the pelvis
- painful or frequent urination
A very serious allergic reaction to this drug is unlikely, but get medical help right away if it occurs. Symptoms of a serious allergic reaction may include:
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before using cyclophosphamide, tell your doctor or pharmacist if you are allergic to it; or to other chemotherapy drugs (e.g., busulfan, chlorambucil); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have:
- decreased bone marrow function (e.g., anemia, leukopenia, thrombocytopenia)
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
- liver disease
- kidney disease
- surgery to remove your adrenal glands
Cyclophosphamide can make you more likely to get infections or may worsen any current infections. Therefore, wash your hands well to prevent the spread of infection. Avoid contact with people who have infections that may spread to others (such as chickenpox, measles, flu). Consult your doctor if you have been exposed to an infection or for more details.
Do not have immunizations/vaccinations without the consent of your doctor. Avoid contact with people who have recently received live vaccines (such as flu vaccine inhaled through the nose).
To lower the chance of getting cut, bruised, or injured, use caution with sharp objects like razors and nail cutters, and avoid activities such as contact sports.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Caution is advised when using this drug in the elderly because they may be more sensitive to its effects.
Caution is advised when using this drug in children because they may be more sensitive to its effects, especially possible infertility later in life.
Tell your doctor if you are pregnant or plan to become pregnant. You should not become pregnant while using cyclophosphamide. Cyclophosphamide may harm an unborn baby. Your doctor should order a pregnancy test before you start this medication. Women should ask about reliable forms of birth control while using this medication and for 1 year after stopping treatment. Men with female partners of childbearing age should ask about reliable forms of birth control while using this medication and for 4 months after stopping treatment. If you or your partner become pregnant, talk to your doctor right away about the risks and benefits of this medication.
This drug passes into breast milk and may harm a nursing infant. Breast-feeding is not recommended while using this drug and for 1 week after stopping treatment. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include:
- nalidixic acid
- St John's wort
- turmeric (curcumin)
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Laboratory and/or medical tests (e.g., complete blood counts, urine tests) should be performed to monitor your progress or check for side effects. Consult your doctor for more details.
For the best possible benefit, it is important to receive each scheduled dose of this medication as directed. If you miss a dose, contact your doctor or pharmacist right away to establish a new dosing schedule.
Consult the product instructions and your pharmacist for storage details. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-888-633-4298 (US) or 1-800-668-1507 (Canada).
Information last revised November 2019.
Copyright(c) 2019 First Databank, Inc.
Conditions of use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information in not intend to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed in indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.