* Generic Name: valacyclovir hydrochloride
* Brand Name: Valtrex
* What is valacyclovir (Valtrex)?
* What are the possible side effects of valacyclovir (Valtrex)?
* What is the most important information I should know about
valacyclovir (Valtrex)?
* What should I discuss with my healthcare provider before taking
valacyclovir (Valtrex)?
* How should I take valacyclovir (Valtrex)?
* What happens if I miss a dose (Valtrex)?
* What happens if I overdose (Valtrex)?
* What should I avoid while taking valacyclovir (Valtrex)?
* What other drugs will affect valacyclovir (Valtrex)?
* Where can I get more information (Valtrex)?
What is valacyclovir (Valtrex)?
Valacyclovir is an antiviral drug. It slows the growth and
spread of the herpes virus to help the body fight the infection.
Valacyclovir is used to treat infections caused by herpes viruses,
including genital herpes, cold sores, and shingles
(herpes zoster) in adults.
Valacyclovir is used to treat cold sores in children who are at least
12 years old, or chickenpox in children who are at least 2 years
old.
Valacyclovir will not cure herpes and will not prevent you from
spreading the virus to other people. However, this medicine can lessen
the symptoms of an infection.
Valacyclovir may also be used for purposes not listed in this
medication guide.
What are the possible side effects of valacyclovir (Valtrex)?
Get emergency medical help if you have signs of an allergic reaction:
hives; difficult breathing; swelling of your face, lips, tongue, or
throat.
Call your doctor at once if you have:
* confusion, aggression, or you feel shaky or unsteady;
* hallucinations (seeing or hearing things that are not real);
* problems with speech;
* a seizure (convulsions); or
* kidney problems--little or no urination, painful or difficult
urination, swelling in your feet or ankles, feeling tired or short
of breath.
Stop taking valacyclovir and call your doctor right away if you have
any of the following signs of a serious side effect that can harm red
blood cells:
* fever, pale skin;
* unusual bleeding (nosebleeds, bleeding gums);
* red or pink urine, little or no urination;
* red spots on the skin (not related to herpes or chickenpox);
* feeling weak or tired;
* stomach pain, bloody diarrhea, vomiting; or
* swelling in your face, hands, or feet.
Side effects may be more likely in adults who are 65 or older.
Common side effects may include:
* nausea, stomach pain;
* headache;
* rash; or
* tired feeling.
This is not a complete list of side effects and others may occur. Call
your doctor for medical advice about side effects. You may report side
effects to FDA at 1-800-FDA-1088.
What is the most important information I should know about valacyclovir
(Valtrex)?
Follow all directions on your medicine label and package. Tell each of
your healthcare providers about all your medical conditions, allergies,
and all medicines you use.
Valtrex Patient Information including How Should I Take
STD Diagnosis, Images, Symptoms, Treatment
Sexually Transmitted Diseases (STDs) Slideshow Pictures
RxList
Image Collection: Picture of Genital Warts (HPV)
RxList
Take the Genital Herpes Quiz
What should I discuss with my healthcare provider before taking valacyclovir
(Valtrex)?
You should not use this medicine if you are allergic to valacyclovir or
acyclovir (Zovirax).
To make sure valacyclovir is safe for you, tell your doctor if you
have:
* kidney disease (or if you are on dialysis);
* HIV/AIDS, or other conditions that can weaken the
immune system; or
* a history of kidney transplant or bone marrow transplant.
It is not known whether this medicine will harm an unborn baby.
However, herpes virus can be passed from an infected mother to her baby
during childbirth. If you have genital herpes, it is very important to
prevent herpes lesions during your pregnancy, so that you do not have a
genital lesion when your baby is born.
Valacyclovir can pass into breast milk and may harm a nursing baby.
Tell your doctor if you are breast-feeding a baby.
Do not give this medicine to a child without medical advice.
How should I take valacyclovir (Valtrex)?
Follow all directions on your prescription label. Do not take this
medicine in larger or smaller amounts or for longer than recommended.
Start taking valacyclovir as soon as possible after the first
appearance of symptoms (such as tingling, burning, blisters). This
medicine might not be as effective if you first start taking it 1 or 2
days after the start of your symptoms.
Some herpes infections need to be treated for longer than others. Use
this medicine for the full prescribed length of time. Your symptoms may
improve before the infection is completely cleared. Skipping doses may
increase the risk of your virus becoming resistant to antiviral
medicine.
You may take valacyclovir with or without food.
Drink plenty of water while you are taking valacyclovir to keep your
kidneys working properly.
Lesions caused by herpes viruses should be kept as clean and dry as
possible. Wearing loose clothing may help to prevent irritation of the
lesions.
Store valacyclovir tablets at room temperature away from moisture and
heat.
Valtrex Patient Information including If I Miss a Dose
STD Diagnosis, Images, Symptoms, Treatment
Sexually Transmitted Diseases (STDs) Slideshow Pictures
RxList
Image Collection: Picture of Genital Warts (HPV)
RxList
Take the Genital Herpes Quiz
What happens if I miss a dose (Valtrex)?
Take the missed dose as soon as you remember. Skip the missed dose if
it is almost time for your next scheduled dose. Do not take extra
medicine to make up the missed dose.
What happens if I overdose (Valtrex)?
Seek emergency medical attention or call the Poison Help line at
1-800-222-1222.
What should I avoid while taking valacyclovir (Valtrex)?
Taking this medicine will not prevent you from passing genital herpes
to other people. Herpes infections are contagious and you can
infect other people even while you are taking with valacyclovir.
Avoid sexual intercourse or use a latex condom to help keep you from
spreading the virus to others. Avoid letting infected areas come into
contact with other people. Avoid touching an infected area and then
touching your eyes. Wash your hands frequently to prevent the spread of
infection.
Do not share this medicine with another person, even if they have the
same symptoms you have.
What other drugs will affect valacyclovir (Valtrex)?
Valacyclovir can harm your kidneys. This effect is increased when you
also use certain other medicines, including: antivirals,
chemotherapy, injected antibiotics, medicine for bowel disorders,
medicine to prevent organ transplant rejection, injectable
osteoporosis medication, and some pain or arthritis medicines
(including aspirin, Tylenol, Advil, and Aleve).
Other drugs may interact with valacyclovir, including prescription and
over-the-counter medicines, vitamins, and herbal products. Tell each of
your health care providers about all medicines you use now and any
medicine you start or stop using.
Where can I get more information (Valtrex)?
Your pharmacist can provide more information about valacyclovir.
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