Vinblastine

Vinblastine is a prescription medication used to treat a variety of cancers including Hodgkin's disease, lymphoma, breast cancer, testicular cancer, and a certain type of uterine cancer. Vinblastine belongs to a group of drugs called vinca alkaloids which work by slowing the growth and replication of cancer cells.

This medication comes in an injectable form to be given directly into a vein (IV) by a healthcare provider.

Common side effects of vinblastine include hair loss, nausea, vomiting, constipation, and diarrhea.

Vinblastine is a prescription medicine used to treat:

• Hodgkin’s disease
• Certain types of lymphoma
• Mycosis fungoides 
• Testicular cancer
• Kaposi’s sarcoma
• Letterer-Siwe disease 

• Choriocarcinoma (a type of uterine cancer)
• Breast cancer

This medication may be prescribed for other uses. Ask your doctor or pharmacist for information.

Adult patients

• It is wise to start therapy for adults by giving a single IV (into the vein) dose of 3.7 mg/m2.
• The following is an approach to dosage at weekly intervals:
• First dose...........................3.7 mg/m2
• Second dose......................5.5 mg/m2
• Third dose..........................7.4 mg/m2
• Fourth dose........................9.25 mg/m2
• Fifth dose...........................11.1 mg/m2
• A maximum dose is 18.5 mg/m2 for adults. Dosing and duration may be adjusted according to therapeutic response or toxicity.

Pediatric Patients

• As a single drug therapy for Letterer-Siwe disease (histiocytosis X), the starting dose of vinblastine sulfate has been reported as 6.5 mg/m2.
• When vinblastine was used in combination with other agents for the treatment of Hodgkin’s disease, the starting dose was reported as 6 mg/m2.
• For testicular germ cell carcinomas, the starting dose of vinblastine was reported as 3 mg/m2 in a combination regimen. Dose modifications should be guided by tolerance to the medication.

Vinblastine injection should be administered by individuals experienced in the administration of vinblastine sulfate.

Caution – It is extremely important that the intravenous needle of catheter be properly positioned before any vinblastine is injected. Leakeage into surrounding tissue during intravenous administration of vinblastine may cause considerable irritation. If extravasation occurs, the injection should be discontinued immediately, and any remaining portion of the dose should then be introduced into another vein. Local injection of hyaluronidase and the application of moderate heat to the area of leakage help disperse the drug and are thought to minimize discomfort and the possibility of cellulites.

FATAL IF GIVEN INTRATHECALLY. FOR INTRAVENOUS USE ONLY. 

Always tell your doctor what other prescription medications, nonprescription medications, vitamins, or nutritional supplements you are currently taking or plan to start taking during the course of a new medication. Do not take aspirin or aspirin-containing products unless your doctor tells you it is okay.

It is extremely important that the intravenous needle delivering vinblastine be properly positioned in the vein. If it is not, the drug can cause serious blistering and damage to the surrounding tissue. If you notice irritation, swelling, or redness at the IV site, notify your doctor or nurse immediately.

People who have to get repeated doses of vinblastine may feel symptoms of peripheral neuropathy (tingling sensation and numbness in the fingers and toes), this needs to be reported to your doctor immediately.

Tell your doctor if you are pregnant or planning on becoming pregnant before starting vinblastine. It can cause birth defects for the baby if you are already pregnant. Both men and women should not plan on conceiving a child while on vinblastine. Your doctor can tell you when it will be safe to do so after treatment.

Do not breast feed a child while on vinblastine.

Do not get any immunizations or vaccinations while being treated with vinblastine unless your doctor says it is okay.

Common side effects of vinblastine include:

• hair loss
• nausea
• vomiting
• diarrhea
• a decrease in white blood cells and platelet counts.
• constipation
• cramping
• weight loss
• changes in taste and appetite
• mouth sores
• anemia

The side effects listed below are serious and need to be told to your doctor about within 24 hours of noticing them:

• vomiting more than four to five times in a day
• diarrhea more than four to five times in a day
• constipation
• strange bleeding or bruising
• bone pain
• severe stomach pain
• sores on the lips or mouth
• blood in the urine or stool (this can look like black or tarry stools) 

This is not a complete list of this medication’s side effects. Ask your doctor or pharmacist for more information.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take aspirin, intraconazole (Sporanox), phenytoin (Dilantin, Phenytek), and vitamins.

Tell your doctor if you are pregnant or plan to become pregnant.

The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.

This medication falls into category D. In animal studies, pregnant animals were given this medication and had some babies born with problems. No well-controlled studies have been done in humans. Therefore, this medication may be used if the potential benefits to the mother outweigh the potential risks to the unborn child. Vinblastine may harm your unborn baby.

Tell your doctor if you are breastfeeding or plan to breastfeed. It is not known if vinblastine is excreted in human breast milk or if it will harm your nursing baby.

Do not get any immunizations or vaccinations while being treated with vinblastine unless your doctor says it is okay.

Drink lots of water to help prevent constipation and dehydration while on vinblastine.

Eat a nutritious diet including foods that will help reduce the effects of diarrhea.