Commonly Used Brand Name(s)Combivir
Therapeutic ClassificationsAntiretroviral Agent
Pharmacologic ClassificationsNucleoside Reverse Transcriptase Inhibitor
Zidovudine has been associated with hematologic toxicity including neutropenia and severe anemia, particularly in patients with advanced HIV-1 disease. Prolonged use of zidovudine has been associated with symptomatic myopathy. Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported. Discontinue lamivudine/zidovudine if clinical or laboratory findings suggestive of lactic acidosis or pronounced hepatotoxicity occur. Severe acute exacerbations of hepatitis B have been reported in patients who are co-infected with hepatitis B virus (HBV) and HIV-1 and have discontinued lamivudine, which is one component of lamivudine/zidovudine; monitor hepatic function upon discontinuation of use and if appropriate, initiate anti-hepatitis B therapy .
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Lamivudine and zidovudine combination will not cure or prevent HIV infection or the symptoms of AIDS. This medicine helps keep HIV from reproducing, and appears to slow down the destruction of the immune system. This may help delay the development of serious health problems usually related to AIDS or HIV infection. Lamivudine and zidovudine combination will not keep you from spreading HIV to other people. People who receive this medicine may continue to have other problems usually related to AIDS or HIV infection.
This medicine is available only with your doctor's prescription.
Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. Also, do not stop taking lamivudine and zidovudine combination without checking with your doctor first.
This medicine works best when there is a constant amount in the blood. To help keep the amount constant, do not miss any doses. If you need help in planning the best times to take your medicine, check with your doctor.
Only take medicine that your doctor has prescribed specifically for you. Do not share your medicine with others.
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.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Use & StorageTOP
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
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 this medicine, the following should be considered:
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.
Lamivudine and zidovudine combination contains a fixed amount of each medicine that cannot be decreased. Therefore, this medicine is not recommended for patients who weigh less than 30 kilograms because the amounts of lamivudine and zidovudine in this product cannot be adjusted for smaller body sizes.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of this medicine in the elderly. However, elderly patients are more likely to have age-related liver, kidney, or heart problems which may require caution and an adjustment in the dose for patients receiving this medicine.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
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.
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 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.
- Doxorubicin Hydrochloride Liposome
- Vincristine Sulfate Liposome
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.
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 ProblemsTOP
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:
- Blood problems (eg, anemia, decreased bone marrow production) or
- Pancreatitis (inflammation of the pancreas), or history of—Use with caution. May make these conditions worse.
- Kidney disease, severe or
- Liver disease—Should not be used in patients with these conditions.
It is very important that your doctor check the progress of you or your child at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
If you or your child have both HIV and hepatitis B virus (HBV) infections, liver disease can become worse when lamivudine and zidovudine treatment is stopped. Discuss any changes in your treatment and medicines with your doctor.
Zidovudine may cause some serious side effects, including blood or bone marrow problems. Symptoms of a blood or bone marrow problem include fever, chills, sore throat, pale skin, or unusual tiredness or weakness. These problems may require blood transfusion or temporarily stopping treatment with lamivudine and zidovudine combination. Check with your doctor if any new health problems or symptoms occur while you or your child are taking lamivudine and zidovudine combination.
Two rare but serious reactions to this medicine are lactic acidosis (too much acid in the blood) and liver toxicity. These are more common if you are female, very overweight (obese), or have been taking anti-HIV medicines for a long time. Call your doctor right away if you or your child have more than one of these symptoms: abdominal discomfort or cramping, dark urine, decreased appetite, diarrhea, general feeling of discomfort, light-colored stools, muscle cramping or pain, nausea, unusual tiredness or weakness, trouble breathing, vomiting, or yellow eyes or skin.
Tell your doctor if you or your child have severe muscle pain, tenderness, or weakness, especially if you take this medicine for a long time.
When you or your child start taking HIV medicines, your immune system may get stronger. If you have infections that are hidden in your body (eg, pneumonia or tuberculosis), you may notice new symptoms when your body tries to fight them. If this occurs, tell your doctor right away.
This medicine may cause you or your child to have excess body fat. Tell your doctor right away if you notice changes in your body shape, including an increased amount of body fat in the neck or upper back, face, around the chest, or stomach area. You might also lose fat from your legs, arms, or face.
This medicine does not decrease the risk of transmitting the HIV infection to others through sexual contact or by contaminated blood. Make sure you understand and practice safe sex, even if your partner also has HIV. Avoid sharing needles with anyone.