Cytovene 500mg Injection
INFORMATION FOR THE PATIENT
What the medication is used for:
CYTOVENE® is an anti-viral drug. It is used to prevent disease caused by a virus called cytomegalovirus (CMV) in people who have received an organ or bone marrow transplants. CMV disease can lead to serious infections in the body, including an infection in the eye, called CMV retinitis, that can cause blindness. CYTOVENE® is also used to treat people with weakened immune systems (including people with AIDS) who have CMV retinitis.
What it does:
CYTOVENE® works by slowing the growth of the CMV virus. It helps control CMV retinitis and decreases the risk of blindness. It also helps prevent the spread of infection to other areas of the body. CYTOVENE® is not a cure for CMV disease. Some people may have worsening CMV retinitis even with treatment. It is important to have your eyes checked regularly by your doctor.
When it should not be used:
CYTOVENE® is contraindicated in patients who are hypersensitive to ganciclovir, valganciclovir or to any of the excipients.
Due to the similarity of the chemical structure of CYTOVENE® and that of acyclovir and its prodrug valacyclovir, a cross-hypersensitivity reaction between these drugs is possible.
What the medicinal ingredient is:
What the nonmedicinal ingredients are:
Hydrochloric acid and sodium hydroxide.
What dosage forms it comes in:
CYTOVENE® is a white to off-white powder in a vial. Each vial contains the equivalent of 500 mg of an active ingredient called ganciclovir. The powder is made up by dissolving it into a liquid for injection
ABOUT THE DISEASE
Cytomegalovirus (CMV) retinitis
Cytomegalovirus (CMV) retinitis is a viral infection of the retina of the eye resulting in inflammation.
CMV retinitis is caused by a member of a group of herpes-type viruses. Infection with CMV is very common. Most people are exposed to CMV in their lifetime, but typically only those with weakened immune systems become ill from CMV infection.
Serious CMV infections can occur in people who have weakened immune systems as a result of:
- Bone marrow transplant
- Drugs that suppress the immune system
- Organ transplant
CMV retinitis is diagnosed through an ophthalmologic exam. Dilation of the pupils and ophthalmoscopy will show signs of CMV retinitis.
CMV infection can be diagnosed with blood or urine tests that look for substances specific to the infection. A tissue biopsy can detect the viral infection and presence of CMV virus particles, but this is rarely done.
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FREQUENTLY ASKED QUESTIONS
CYTOVENE® belongs to a group of medications known as antivirals. It is used to treat and prevent a viral eye infection called cytomegalovirus (CMV) retinitis. This infection usually occurs for people with weakened immune systems, such as people who have had transplants or chemotherapy, and people who have AIDS. It works by preventing the virus (CMV) that causes the infection from reproducing, which helps to prevent CMV from spreading to healthy cells as quickly as it would without treatment.
CYTOVENE® is also used for the prevention of cytomegalovirus disease in people receiving a solid organ transplant who are at risk of developing the disease.
This medication should only be used by people with a weakened immune system
CYTOVENE® is a white to off-white powder in a vial. Each vial contains the equivalent of 500 mg of an active ingredient called ganciclovir. The powder is made up by dissolving it into a liquid for injection.
The dose of CYTOVENE® is based on body weight. CYTOVENE® is given as an intravenous (IV) infusion (injected slowly into the vein over a period of one hour). It is done in a hospital or clinic setting under the supervision of a health care professional. The dose will be determined by your doctor according to individual needs.
For treatment of CMV retinitis, the recommended starting dose of CYTOVENE® is 5 mg per kilogram of body weight, given every 12 hours for 14 to 21 days.
For prevention of CMV disease in transplant recipients, the recommended starting dose of CYTOVENE® is 5 mg per kilogram of body weight, given every 12 hours for 7 to 14 days. After this time, CYTOVENE® may be given once daily.
For Maintenance Treatment of CMV Retinitis, the dose of 5mg/kg/day may be administered once per day for 7 days or 6mg/kg/day for 5 days.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important this medication be given exactly as recommended by your doctor. If you miss an appointment to receive CYTOVENE®, contact your doctor as soon as possible to reschedule your appointment
Do not use this medication if you:
- are allergic to ganciclovir or any ingredients of this medication
- are allergic to valganciclovir, acyclovir, or valacyclovir
Diarrhea, upset stomach, dizziness, drowsiness, unsteadiness, shaking (tremors), or pain/redness/irritation at the injection site may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if any of these unlikely but serious side effects occur: mental/mood changes (such as confusion, hallucinations), signs of kidney problems (such as a change in the amount of urine), seizures.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including rash, 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.
There may be an interaction between CYTOVENE® and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
- stop taking one of the medications,
- change one of the medications to another,
- change how you are taking one or both of the medications, or
- leave everything as is.
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescriptions, over-the-counter (non-prescription), and herbal medications you are taking. Also, tell them about any supplements you take. Since caffeine, alcohol, nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
If you miss a dose of CYTOVENE®, take it as soon as possible. However, if it is time for your next dose, do not double the dose, just carry on with your regular schedule.
Store at room temperature (15-30°C), avoid excessive heat above 40°C (104°F).
Serious blood problems can occur such as low numbers of white blood cells, red blood cells or
Tumours have been found in laboratory animals receiving this drug, although at this time there is no
similar information from human studies. The drug also has damaging effects on the reproductive system. When used in men, it may decrease the number of sperm in the semen and this may be complete and irreversible. In women, not only may there be suppression of fertility, but pregnancy during
treatment is likely to lead to the birth of a malformed child.
BEFORE you use CYTOVENE® talk to your doctor or pharmacist if:
- You have, or have had, low numbers of either white blood cells, red blood cells or platelets in your blood.
- You are taking acyclovir, valganciclovir, or valacyclovir.
- You have kidney problems.
- You are receiving hemodialysis.
- You are taking ANY other medicines (prescription or nonprescription) including herbal or natural products.
- You or your partner are pregnant, plan on becoming pregnant, or are breast-feeding a child, as CYTOVENE® may cause birth defects in humans and should not be used during pregnancy. If there is any chance that you or your partner could become pregnant, it is very important for you to use effective contraception during and after treatment with CYTOVENE®. For women this means using barrier protection (condoms) and one additional form of contraception (birth control pills, intrauterine device) during and for at least 30 days after treatment with CYTOVENE®. For men this means using barrier protection (condoms) during and for at least 90 days following treatment with CYTOVENE®, unless it is certain that the female partner is not at risk of becoming pregnant. Women who are HIV positive should not breast feed because HIV infection can be passed to the baby via the breast milk
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