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Raltitrexed For Colorectal Cancer (Systemic)
Raltitrexed ( ral-ti-TREX-ed) belongs to a group of medicines known as antimetabolites. It is used to treat cancer of the colon and rectum. It may also be used to treat other kinds of cancer, as determined by your doctor.
Raltitrexed blocks an enzyme needed by the cell to live. This interferes with the growth of cancer cells, which are eventually destroyed. Since the growth of normal body cells may also be affected by raltitrexed, other effects will also occur. Some of these may be serious and must be reported to your doctor. Other effects, like hair loss, may not be serious but may cause concern.
Before you begin treatment with raltitrexed, you and your doctor should talk about the good this medicine will do as well as the risks of using it.
Raltitrexed is to be administered only by or under the immediate supervision of your doctor. It is available in the following dosage form:
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 raltitrexed, the following should be considered:
Allergies- Tell your doctor if you have ever had any unusual or allergic reaction to raltitrexed.
Pregnancy- Tell your doctor if you are pregnant or if you intend to have children. There is a chance that 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. Raltitrexed causes toxic or harmful effects in rats. 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 receiving this medicine. It is best to use some kind of birth control while you are receiving raltitrexed. Tell your doctor right away if you think you have become pregnant while receiving raltitrexed. Because raltitrexed may cause serious side effects, pregnancy is generally not recommended while you are taking it.
Breast-feeding- Tell your doctor if you are breast-feeding or if you intend to breast-feed during treatment with this medicine. Because raltitrexed may cause serious side effects, breast-feeding is generally not recommended while you are taking it.
Children- Studies on this medicine have been done only in adult patients, and there is no specific information comparing use of raltitrexed in children with use in other age groups.
Older adults- Elderly people are especially sensitive to the effects of raltitrexed. Raltitrexed may be more likely to cause side effects such as cracked lips, diarrhea, difficulty in swallowing, sores, ulcers, or white spots on the lips, tongue, or inside the mouth in elderly patients.
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 receiving raltitrexed, it is especially important that your doctor and pharmacist know if you are taking any of the following:
Other medical problems- The presence of other medical problems may affect the use of raltitrexed. Make sure you tell your doctor if you have any other medical problems, especially:
Proper Use of This Medicine
This medicine is sometimes given together with certain other medicines. If you are using a combination of medicines, it is important that you receive each one at the proper time. If you are taking some of these medicines by mouth, ask your health care professional to help you plan a way to take them at the right times.
This medicine usually causes nausea and vomiting that may be severe. However, it is very important that you continue to receive the medicine, even if you begin to feel ill. Ask your health care professional for ways to lessen these effects, especially if they are severe.
The dose of raltitrexed 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 size, and whether or not other medicines are also being taken. If you have any questions about the proper dose of raltitrexed, ask your doctor.
If you have any questions about this, check with your doctor.
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.
This medicine may cause some people to feel unusually tired or ill. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are less alert .
While you are being treated with raltitrexed, and after you stop treatment with it, do not have any immunizations (vaccinations) without your doctor's approval . Raltitrexed may lower your body's resistance and there is a chance you might get the infection the immunization is meant to prevent. In addition, other persons living in your household should not take oral polio vaccine since there is a chance they could pass the polio virus on to you. Also, avoid persons who have taken oral polio vaccine within the last several months. 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.
Raltitrexed can temporarily lower the number of white blood cells in your blood, 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:
Side Effects of This Medicine
Side Effects of This Medicine
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these 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:
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. However, check with your doctor if any of the following side effects continue or are bothersome.
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:
After you stop receiving raltitrexed, 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 side effects:
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT