Thioplex belongs to the group of medicines called alkylating agents. It is used to treat some kinds of cancer.
Thioplex interferes with the growth of cancer cells, which are eventually destroyed. Since the growth of normal body cells may also be affected by thiotepa, 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. Some effects do not occur for months or years after the medicine is used.
Before you begin treatment with thiotepa, you and your doctor should talk about the good this medicine will do as well as the risks of using it. Thioplex is to be administered only by or under the immediate supervision of your doctor.
Once a medicine has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although these uses are not included in product labeling, Thioplex is used in certain patients with the following medical conditions:
Cancer in the membranes that cover and protect the brain and spinal cord (the meninges)
This product is available in the following dosage forms:
Before using Thioplex, you must know all about the risks and complications associated with it. This is a decision you and your doctor will make.
For this medicine, the following should be considered:
Allergies: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Pediatric Population: There is no specific information about the use of thiotepa in children.
Geriatric Population: 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 thiotepa in the elderly.
Pregnancy: All Trimesters: Category D: Studies in pregnant women have demonstrated a risk to the fetus. However, the benefits of therapy in a life threatening situation or a serious disease may outweigh the potential risk.
Breastfeeding: There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Drug Interactions: 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 this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Other Interactions: Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems: The presence of other medical problems may affect the use of this medicine.
Make sure you tell your doctor if you have any other medical problems, especially:
Kidney stones (history of)—Thiotepa may increase levels of uric acid in the body, which can cause gout or kidney stones
Infection—Thiotepa can reduce immunity to infection
Liver disease—Effects may be increased because of slower removal of thiotepa from the body
3 Proper Usage
To use Thioplex properly, you must follow all instructions given by your doctor. While you are using Thioplex, 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.
Thioplex sometimes causes nausea, vomiting, and loss of appetite. 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.
Dosing: The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
4 Precautions to Take
Before using Thioplex, there are some precautions you must take. 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.
Surgery and dental work: Before having any kind of surgery, including dental surgery, make sure the medical doctor or dentist in charge knows that you are taking this medicine.
Immunizations: While you are being treated with thiotepa, and after you stop treatment with it, do not have any immunizations (vaccinations) without your doctor's approval. Thiotepa 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.
Blood Problems: Thiotepa 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.
Your doctor will inform you of what you need to know before using Thioplex. Along with their needed effects, medicines like Thioplex 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 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:
Some 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. This medicine may cause a temporary loss of hair in some people. After treatment with thiotepa has ended, normal hair growth should return.
After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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