- Very bad and sometimes life-threatening blood and bone marrow problems like anemia, low platelet counts, or low white blood cell counts have happened with this drug. Change in dose or even stopping the drug may be needed if any of these side effects happen. Talk with the doctor.
- This drug has caused cancer, fertility problems in males and females that could be long-lasting, and harm to unborn babies in animals. This drug may have the same effects in humans. Talk with the doctor.
- It is used to treat a viral infection of the eyes in people with immune system problems.
- It is used to prevent cytomegalovirus (CMV) disease after organ transplant.
- If you have an allergy to valganciclovir, acyclovir, or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have any of these health problems: Low white blood cell count or low platelet count.
- If you have kidney disease or are on dialysis.
- If you are taking ganciclovir. Do not take ganciclovir while taking this drug.
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
- Have an eye exam as you have been told by your doctor.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- You may have more chance of getting an infection. Wash hands often. Stay away from people with infections, colds, or flu.
- You may bleed more easily. Be careful and avoid injury. Use a soft toothbrush and an electric razor.
- Do not run out of this drug.
- If you are 65 or older, use this drug with care. You could have more side effects.
- Use with care in children. Talk with the doctor.
- If you are a man and have sex with a female who could get pregnant, protect her from pregnancy during care and for 3 months after care ends. Use a condom.
- This drug may cause harm to the unborn baby if you take it while you are pregnant.
- A pregnancy test will be done to show that you are NOT pregnant before starting this drug. If you get pregnant while taking this drug, call your doctor right away.
- Use birth control that you can trust to prevent pregnancy while taking this drug and for 1 month after stopping this drug.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
- This drug is not a cure for CMV infections of the eye. Stay under the care of your doctor.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of infection like fever, chills, very bad sore throat, ear or sinus pain, cough, more sputum or change in color of sputum, pain with passing urine, mouth sores, or wound that will not heal.
- Signs of bleeding like throwing up blood or throw up that looks like coffee grounds; coughing up blood; blood in the urine; black, red, or tarry stools; bleeding from the gums; vaginal bleeding that is not normal; bruises without a reason or that get bigger; or any bleeding that is very bad or that you cannot stop.
- Signs of kidney problems like unable to pass urine, change in how much urine is passed, blood in the urine, or a big weight gain.
- Signs of low potassium levels like muscle pain or weakness, muscle cramps, or a heartbeat that does not feel normal.
- Feeling confused.
- Feeling very tired or weak.
- Dark urine or yellow skin or eyes.
- Pale skin.
- Shakiness, trouble moving around, or stiffness.
- Change in balance.
- Hallucinations (seeing or hearing things that are not there).
- Low mood (depression).
- A burning, numbness, or tingling feeling that is not normal.
- Very bad headache.
- Very bad dizziness.
- Feeling very sleepy.
- Swelling in the arms or legs.
- Change in eyesight.
- Upset stomach or throwing up.
- Loose stools (diarrhea).
- Belly pain.
- Not able to sleep.
- Keep taking this drug as you have been told by your doctor or other health care provider, even if you feel well.
- To gain the most benefit, do not miss doses.
- Take this drug with food.
- Drink lots of noncaffeine liquids unless told to drink less liquid by your doctor.
- Do not get this drug, as well as the liquid, broken tablets, or crushed tablets, on your skin or in your eyes, nose, or mouth. If you get it on your skin, wash with soap and water. If you get it in your eyes, rinse with plain water.
- Swallow whole. Do not chew, break, or crush.
- Shake well before use.
- Measure liquid doses carefully. Use the measuring device that comes with this drug.
- Do not mix with any liquid.
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Store liquid (solution) in a refrigerator. Throw away any part not used after 7 weeks.
- Do not freeze.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Check with your pharmacist about how to throw out unused drugs.
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.