ACYCLOVIR (ay SYE kloe veer) is an antiviral medicine. It is used to treat or prevent infections caused by certain kinds of viruses. Examples of these infections include herpes and shingles. This medicine will not cure herpes.
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Shake well before using. Use a specially marked spoon or cup to measure each dose. Ask your pharmacist if you do not have one. Household spoons are not accurate. You can take this medicine with or without food. Take your medicine at regular intervals. Bottles of suspension may contain more liquid than you need to take. Follow your doctors instructions about how much to take and for how many days to take it. Do not take more medicine than directed. But, finish all the medicine that is prescribed even if you think you are better. Do not skip doses or stop your medicine early.
Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 2 years old for selected conditions, precautions do apply.
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
confusion, hallucinations, tremor
increased sensitivity to the sun
redness, blistering, peeling or loosening of the skin, including inside the mouth
trouble passing urine or change in the amount of urine
unusual bleeding or bruising, or pinpoint red spots on the skin
unusually weak or tired
yellowing of the eyes or skin
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
Do not take this medicine with any of the following medications:
This medicine may also interact with the following medications:
certain antibiotics like amikacin, gentamicin, tobramycin, vancomycin
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
Keep out of the reach of children.
Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F). Throw away any unused medicine after the expiration date.
They need to know if you have any of these conditions:
an unusual or allergic reaction to acyclovir, ganciclovir, valacyclovir, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
Tell your doctor or health care professional if your symptoms do not improve. This medicine works best when started very early in the course of an infection. Begin treatment at the first signs of infection.
Drink 6 to 8 glasses of water or fluids every day while you are taking this medicine. This will help prevent side effects.
You can still pass chickenpox, shingles, or herpes to another person even while you are taking this medicine. Avoid contact with others as durected. Genital herpes is a sexually transmitted disease. Talk to your doctor about how to prevent giving your sexual partner the infection.