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Uracil Mustard (Systemic)

Category

  • Antineoplastic

Description

Uracil ( YOOR-a-sill) mustard belongs to the group of medicines known as alkylating agents. It is used to treat some kinds of cancer as well as some noncancerous conditions.

Uracil mustard interferes with the growth of cancer cells, which are eventually destroyed. Since the growth of normal body cells may also be affected by uracil mustard, other effects will also occur. Some of these may be serious and must be reported to your doctor. Other effects, such as hair loss, may not be serious but may cause concern. Some effects may not occur for months or years after the medicine is used.

Before you begin treatment with uracil mustard, you and your doctor should talk about the good this medicine will do as well as the risks of using it.

Uracil mustard is available only with your doctor's prescription, in the following dosage form:

    Oral
  • Capsules (U.S.)



Before Using This Medicine

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For uracil mustard, the following should be considered:

Allergies- Tell your doctor if you have ever had any unusual or allergic reaction to uracil mustard.

Pregnancy- Tell your doctor if you are pregnant or if you intend to have children. This medicine may cause birth defects if either the male or female is taking it at the time of conception or if it is taken during pregnancy. In addition, many cancer medicines may cause sterility which could be permanent. Although sterility has not been reported with this medicine, the possibility should be kept in mind.

Be sure that you have discussed this with your doctor before taking this medicine. It is best to use some kind of birth control while you are taking uracil mustard. Tell your doctor right away if you think you have become pregnant while taking uracil mustard.

Breast-feeding- Tell your doctor if you are breast-feeding or if you intend to breast-feed during treatment with this medicine. Because uracil mustard may cause serious side effects, breast-feeding is generally not recommended while you are receiving it.

Children- Although there is no specific information about the use of uracil mustard in children, it is not expected to cause different side effects or problems in children than it does in adults.

Older adults- Many medicines have not been tested in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults or if they cause different side effects or problems in older people. There is no specific information about the use of uracil mustard in the elderly.

Other medicines- Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking uracil mustard, it is especially important that your health care professional know if you are taking any of the following:

  • Amphotericin B by injection (e.g., Fungizone) or
  • Antithyroid agents (medicine for overactive thyroid) or
  • Azathioprine (e.g., Imuran) or
  • Chloramphenicol (e.g., Chloromycetin) or
  • Colchicine or
  • Flucytosine (e.g., Ancobon) or
  • Interferon (e.g., Intron A, Roferon-A) or
  • Plicamycin (e.g., Mithracin) or
  • Zidovudine (e.g., Retrovir) or
  • If you have ever been treated with x-rays or cancer medicines-Uracil mustard may increase the effects of these medicines or radiation therapy on the blood
  • Probenecid (e.g., Benemid) or
  • Sulfinpyrazone (e.g., Anturane)-Uracil mustard may increase the concentration of uric acid in the blood, which these medicines are used to lower

Other medical problems- The presence of other medical problems may affect the use of uracil mustard. Make sure you tell your doctor if you have any other medical problems, especially:
  • Chickenpox (including recent exposure) or
  • Herpes zoster (shingles)-Risk of severe disease affecting other parts of the body
  • Gout (history of) or
  • Kidney stones (history of)-Uracil mustard may increase levels of uric acid in the body, which can cause gout or kidney stones
  • Infection-Uracil mustard can reduce immunity to infection
  • Kidney disease
  • Liver disease


Proper Use of This Medicine

Use this medicine only as directed by your doctor . Do not use more or less of it, and do not use it more often than your doctor ordered. The exact amount of medicine you need has been carefully worked out. Taking too much may increase the chance of side effects, while taking too little may not improve your condition.

While you are using this medicine, your doctor may want you to drink extra fluids so that you will pass more urine. This will help prevent kidney problems and keep your kidneys working well.

Uracil mustard often causes nausea and vomiting. Even if you begin to feel ill, do not stop using this medicine without first checking with your doctor . Ask your health care professional for ways to lessen these effects.

If you vomit shortly after taking a dose of uracil mustard, check with your doctor. You will be told whether to take the dose again or to wait until the next scheduled dose.

Dosing-

The dose of uracil mustard will be different for different patients. The dose that is used may depend on a number of things, including what the medicine is being used for, the patient's weight, and whether or not other medicines are also being taken. If you are taking uracil mustard at home, follow your doctor's orders or the directions on the label . If you have any questions about the proper dose of uracil mustard, ask your doctor.

Missed dose-

If you miss a dose of this medicine, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage-

To store this medicine:

  • Keep out of the reach of children.
  • Store away from heat and direct light.
  • Do not store in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
  • Do not keep outdated medicine or medicine no longer needed. Be sure that any discarded medicine is out of the reach of children.


Precautions While Using This Medicine

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly and to check for unwanted effects.

While you are being treated with uracil mustard, and after you stop treatment with it, do not have any immunizations (vaccinations) without your doctor's approval . Uracil mustard may lower your body's resistance and there is a chance you might get the infection the immunization is meant to prevent. Other people living in your household should not take or should not have recently taken oral polio vaccine since there is a chance they could pass the polio virus on to you. Also, avoid other persons who have taken oral polio vaccine. Do not get close to them and do not stay in the same room with them for very long. If you cannot take these precautions, you should consider wearing a protective face mask that covers the nose and mouth.

Uracil mustard can lower the number of white blood cells in your blood temporarily, increasing the chance of getting an infection. It can also lower the number of platelets, which are necessary for proper blood clotting. If this occurs, there are certain precautions you can take, especially when your blood count is low, to reduce the risk of infection or bleeding:

  • If you can, avoid people with infections. Check with your doctor immediately if you think you are getting an infection or if you get a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
  • Check with your doctor immediately if you notice any unusual bleeding or bruising; black, tarry stools; blood in urine or stools; or pinpoint red spots on your skin.
  • Be careful when using a regular toothbrush, dental floss, or toothpick. Your medical doctor, dentist, or nurse may recommend other ways to clean your teeth and gums. Check with your medical doctor before having any dental work done.
  • Do not touch your eyes or the inside of your nose unless you have just washed your hands and have not touched anything else in the meantime.
  • Be careful not to cut yourself when you are using sharp objects such as a safety razor or fingernail or toenail cutters.
  • Avoid contact sports or other situations where bruising or injury could occur.


Side Effects of This Medicine

Along with their needed effects medicines like uracil mustard can sometimes cause unwanted effects such as blood problems, loss of hair, and other side effects. These and others are described below. Also, because of the way these medicines act on the body, there is a chance that they might cause other unwanted effects that may not occur until months or years after the medicine is used. These delayed effects may include certain types of cancer, such as leukemia. Discuss these possible effects with your doctor.

Although not all of the side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

  • Less common
    • Black, tarry stools;  blood in urine or stools;  cough or hoarseness;  fever or chills;  lower back or side pain;  painful or difficult urination;  pinpoint red spots on skin;  unusual bleeding or bruising 

Check with your doctor as soon as possible if any of the following side effects occur:

  • Less common
    • Joint pain;  swelling of feet or lower legs 

  • Rare
    • Sores in mouth and on lips;  yellow eyes or skin 

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

  • More common
    • Diarrhea;  nausea or vomiting 

  • Less common
    • Darkening of the skin;  irritability ;  mental depression;  nervousness ;  skin rash and itching 

This medicine may cause a temporary loss of hair in some people. After treatment with uracil mustard has ended, normal hair growth should return.

After you stop taking uracil mustard, it may still produce some side effects that need attention. During this period of time, check with your doctor if you notice any of the following:

  • Black, tarry stools;  blood in urine or stools;  cough or hoarseness;  fever or chills;  lower back or side pain;  painful or difficult urination;  pinpoint red spots on skin;  unusual bleeding or bruising 

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.



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Last updated: Tue, 06 Jan 2009 00:20:03 GMT
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