Valtrex for cold sores: Uses, dosages, and side effects

Instead, it may reduce the duration of blister flare-ups. Therefore, if a person has cold sores, genital herpes, or shingles, they should check with their doctor to determine the most suitable treatment for their condition.

The Acyclovir Registry documented outcomes of 1, infants and fetuses exposed to acyclovir during pregnancy with earliest exposure during the first trimester, during the second trimester, during the third trimester, and 2 unknown.

The occurrence of major birth defects during first-trimester exposure to acyclovir was 3. The Valacyclovir Pregnancy Registry documented outcomes of infants and fetuses exposed to valacyclovir during pregnancy 28 with earliest exposure in the first trimester, 31 during the second trimester, and 52 during the third trimester.

The occurrence of major birth defects during first-trimester exposure to valacyclovir was 4. Available studies have methodological limitations including insufficient sample size to support conclusions about overall malformation risk or for making comparisons of the frequencies of specific birth defects.

No adverse embryo-fetal effects were observed in rats and rabbits at acyclovir exposures AUC of up to approximately 4 rats and 7 rabbits times the exposure in humans at the MRHD.

No significant adverse effects were observed in offspring exposed daily from before birth through lactation at maternal exposures AUC of approximately 6 times higher than human exposures at the MRHD. Lactation Risk Summary Although there is no information on the presence of valacyclovir in human milk, its metabolite, acyclovir, is present in human milk following oral administration of valacyclovir.

Based on published data, a mg maternal dose of Valtrex twice daily would provide a breastfed child with an oral acyclovir dosage of approximately 0.

There is no data on the effects of valacyclovir or acyclovir on the breastfed child or on milk production. Data Following oral administration of a mg dose of Valtrex to 5 lactating women, peak acyclovir concentrations Cmax in breast milk ranged from 0. The acyclovir breast milk AUC ranged from 1. A mg maternal dose of Valtrex twice daily would provide a breastfed child with an oral acyclovir dosage of approximately 0. Unchanged valacyclovir was not detected in maternal serum, breast milk or infant urine.

Pediatric Use Valtrex is indicated for treatment of cold sores in pediatric patients aged greater than or equal to 12 years and for treatment of chickenpox in pediatric patients aged 2 to less than 18 years [see Indications and Usage 1. No efficacy evaluations were conducted in any of the 3 trials. Acyclovir is not approved for suppressive therapy in infants and children following neonatal HSV infections; therefore, valacyclovir is not recommended for this indication because efficacy cannot be extrapolated from acyclovir.

None of the subjects enrolled in this trial had genital herpes. Acyclovir systemic exposures in pediatric subjects following valacyclovir oral suspension were compared with historical acyclovir systemic exposures in immunocompetent adults receiving the solid oral dosage form of valacyclovir or acyclovir for the treatment of recurrent genital herpes. Moreover, valacyclovir has not been studied in children aged 1 to less than 12 years with recurrent genital herpes.

Geriatric Use Of the total number of subjects in clinical trials of Valtrex, were 65 and over, and were 75 and over. In a clinical trial of herpes zoster, the duration of pain after healing post-herpetic neuralgia was longer in subjects 65 and older compared with younger adults.

Elderly patients are more likely to have reduced renal function and require dose reduction. Elderly patients are also more likely to have renal or CNS adverse events [see Dosage and Administration 2.

Renal Impairment Dosage reduction is recommended when administering Valtrex to patients with renal impairment [see Dosage and Administration 2. Overdosage Caution should be exercised to prevent inadvertent overdose [see Use in Specific Populations 8. Precipitation of acyclovir in renal tubules may occur when the solubility 2. People with kidney disease should inform their doctor, who can decrease the dosage of Valtrex or recommend an alternative medication depending on the severity of the condition.

A person should talk to their doctor about their health conditions to determine whether they should take Valtrex. Symptoms a person should watch for in and around the mouth include: tingling burning itchiness There is no clinical data to indicate that Valtrex will have any effect if a person starts taking it after blisters have formed. A person should not take more than 1 day 2 doses of Valtrex when treating cold sores.

Take the two doses 12 hours apart. Each dose consists of 2 grams of medication. How quickly does it work? Valtrex is an antiviral medication, which means it can help shorten the duration of cold sores. According to Harvard Health Publishing , cold sores can last for around 10—12 days without treatment. Valtrex may reduce the formation of cold sore blisters by up to 2 days. Valtrex may cause side effects for some people.

According to the NLM , the most common side effects may include: headache abdominal pain The most common side effect is a headache. The NLM also state that dizziness is a common side effect in people using Valtrex for cold sores. Other symptoms may occur when treating either shingles or herpes with Valtrex at different or prolonged doses. Risks The NLM state that there are no known major drug interactions between Valtrex and other medications.

There is also no known risk of taking Valtrex during pregnancy or while breastfeeding. However, the NLM acknowledge that a very small amount will be present in breast milk.

There is a risk of accidental overdose, so a person taking Valtrex should make sure they stick to the prescribed dosage.

People living with kidney issues should talk to their doctor about their risk before taking the medication. Other treatments Valtrex is not the only prescription available for oral herpes.

Famvir famciclovir is another antiviral medication for cold sores, shingles, and genital herpes. It has similar side effects to Valtrex, such as headaches and nausea.

Can you split Valtrex pills? - Herpes question(s) - H Opp Forums

Avoid letting infected areas come into contact with other people. Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. How should I take Valtrex? While Valtrex use in pregnant women is limited, there is no evidence of major risk to the human fetus from valacyclovir.

VALTREX 500 mg (Valtrex 500 mg)

Click all directions on your prescription label and read all medication guides or instruction sheets. Do not give this Valtrex to a child without medical advice. However, this medicine can lessen the symptoms of an infection. Avoid touching an infected area and then touching your eyes.

While Valtrex Connection in pregnant women is limited, there is no evidence of major risk to the human fetus from valacyclovir.

Therapy should be initiated at the earliest sign or symptom [see Use in Specific Populations 8. You may need to take the medicine for only 1 day or for just a few days.

Valacyclovir Side Effects

Herpes can be passed to your baby during childbirth if you have a genital lesion when your baby is born. Reduction of Transmission: The recommended dosage of VALTREX for reduction of transmission of genital herpes in patients with a history of 9 or fewer recurrences per year is mg once daily for the source partner.

Avoid letting infected areas come into one with other people. What happens if I overdose? Valtrex bad effects Get emergency medical help if you have signs of an allergic reaction to Valtrex: hives; difficult breathing; swelling of your face, valtrex, tongue, or throat.

Avoid sexual intercourse or use a latex condom to help keep you from spreading the herpes virus to others. Stop taking valacyclovir and call your doctor right away if you have any of only following signs of take 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; purple or red spots on the skin not related to herpes or chickenpox ; feeling weak or tired; click pain, bloody diarrhea, vomiting; or swelling in your face, hands, or feet.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. B No evidence of risk in humans Based on FDA pregnancy categories Tell your doctor if you are pregnant or plan to become pregnant.

Herpes can be passed to your baby during childbirth if you have a genital lesion when your baby is born. If you have genital herpes, it is very important to prevent herpes lesions during pregnancy. Take your medicine as directed to best control your infection. It may not be safe to breastfeed while using this medicine. Ask your doctor about any risk. Avoid sexual intercourse or use a latex condom to help keep you from spreading the herpes 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. Valacyclovir will not prevent the spread of sexually transmitted diseases other than the virus that causes genital herpes.

Do not share this medicine with another person, even if they have the same symptoms you have. Do not use in larger or smaller amounts or for longer than recommended. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed. Start taking valacyclovir as soon as possible after the first appearance of symptoms such as tingling, burning, blisters, or rash.

This medicine may not be effective if taken after you already have symptoms. You may take valacyclovir with or without food. Tell your doctor if a child taking this medicine cannot swallow the valacyclovir tablet.

Therapy was most effective when administered within 48 hours of the onset of signs and symptoms. Initiate treatment at the first sign or symptom of an episode. Suppressive Therapy: The recommended dosage of VALTREX for chronic suppressive therapy of recurrent genital herpes is 1 gram once daily in patients with normal immune function. In patients with a history of 9 or fewer recurrences per year, an alternative dose is mg once daily.

Reduction of Transmission: The recommended dosage of VALTREX for reduction of transmission of genital herpes in patients with a history of 9 or fewer recurrences per year is mg once daily for the source partner. Therapy should be initiated at the earliest sign or symptom of herpes zoster and is most effective when started within 48 hours of the onset of rash.

The total dose should not exceed 1 gram 3 times daily. Therapy should be initiated at the earliest sign or symptom [see Use in Specific Populations 8.

Valtrex: Uses, Dosage & Side Effects - iesrosachacel.net

User Reviews for Valtrex

I took 2 of the pills twice a day for 2 days I think. May interact with a number of medicines such as antacids, cimetidine, digoxin, probenecid and thiazide diuretics ; however, in people with normal kidney function, these interactions are not clinically significant. Http://iesrosachacel.net/biblio731/catalog/field/page83.html it stops multiplying and changing then stop taking it.

I passed out during final exams because I had 18 fever blisters at once and I had gotten poisoned by it.

How should I take Valtrex? Bumps everywhere! One your doctor if a child taking this medicine cannot swallow the tablet. I used to get 1 to 2 cold sores monthly, especially in the winter time. Bottom Line Valacyclovir is an antiviral on this website that helps treat herpes and bad infections.

At the first sign of outbreak, usually a small blister or a couple of them, Valtrex take mg every 12 hours for one day. I just started taking Valtrex regardless of never having only because I want to live a normal life and reduce the risk of passing it to anyone else.

Some herpes infections need to be treated for longer than take.

Valacyclovir: 7 things you should know

Valacyclovir does not cure genital herpes or completely rid the body of herpes or varicella zoster virus. The doctor told me that people like me carry herpes simplex type 2 virus in nerve ending of our spine and that when we are run down the immune system can't keep it under control and it comes out again.

At other times, always use a condom.

More 1. I feel like the doctors are failing us when it comes to this. It should be started as soon as possible after symptom onset and only needs to be taken twice a day. Hoping for good results from Valtrex. Valtrex side effects Get emergency medical source if you have signs of an allergic reaction to Valtrex: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Valtrex can be harmful to the kidneys, and these effects are increased when it is used together with other medicines that can harm the kidneys.

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Sep 29,  · Valtrex for Cold Sores: Is It Right for You? Treating cold sores with Valtrex. Cold sores typically start to heal on their own within about four to six days. Dosage. Valtrex is an oral caplet. It comes in milligram and 1-gram strengths. It’s available as a brand-name Effectiveness. Most.

I took it for months with nothing changing. As other reviewers have said - it basically appears to be placebo pill. Unless you have insurance and can get the real valtrex - do not support Camber manufacturing.

We both get them on our chins, cheeks, foreheads, nose, lips They are very embarrassing and even more painful. They were all over my face, like multiple blisters when I went for my Pap smear years ago.

Then, I had to start taking it daily again. After stopping for another year, I started getting them on my cheeks and mouth again. Instead of the usual 2 weeks it takes to get rid of mine, it took 6 days!!!! Life changing. Good luck! So many people have this! I took 2 of the pills twice a day for 2 days I think. I took one everyday after even though my doc told me to take one twice a day for 2 days and that was it. If it stops multiplying and changing then stop taking it. If it starts to flare up again, take another.

In my 30's and 40's, I would get the worst cold sores. I was prescribed Valtrex about 10 years ago as needed for outbreaks. However, in the last 6 months I've started having recurrent outbreaks, about once every weeks, age, stress most likely.

My doctor started prescribing me valtrex daily. Today, I got up from bed and had a very small cold sore on the corner of my mouth. Very frustrated and took an additional 1g tablet to help, and thankfully, it hasn't become worse.

Will see over time if it works on frequency. I will say, valtrex has helped shorten the duration now just a few days compared to weeks before , lessen the severity and pain now small, barely there ones. In rare occasions, I've been able to stop an outbreak before it occurs, but that's so hard to do.

I am very empathetic to my fellow cold sore strugglers, and to me the best cold sore is NO cold sore at all. The beginning of last week I experienced my first outbreak.

Took some time but it cleared up my first outbreak , since then when I start to feel discomfort burning sensations, itchiness, sensitivity I start taking two mG daily and within 3 days I am good again. Immediate relief first day. I notice eating lots of veggies help but anything peanut related can trigger a reaction. I used to get 1 to 2 cold sores monthly, especially in the winter time. I am free from the multiple, painful blisters that used to make me miserable for weeks until they went away.

Nothing ever worked for me before I was diagnosed with Herpes 2 years ago. Bumps everywhere! On my lips, above my lips. The doctor told me to take my mg Valtrex 3x a day. Hang in there! I want to share an experience with a doctor. I passed out during final exams because I had 18 fever blisters at once and I had gotten poisoned by it.

The doctor told me that people like me carry herpes simplex type 2 virus in nerve ending of our spine and that when we are run down the immune system can't keep it under control and it comes out again. So that was a revelation. Anyway, valtrex has been a life saver. I tried everything as well - but nothing has ever come close to helping me until Valtrex. You may take Valtrex with or without food. Tell your doctor if a child taking this medicine cannot swallow the tablet.

Drink plenty of water while you are taking Valtrex 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 Valtrex tablets at room temperature away from moisture and heat. What happens if I miss a dose? 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? Seek emergency medical attention or call the Poison Help line at What to avoid 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 Valtrex. 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.

Valtrex side effects Get emergency medical help if you have signs of an allergic reaction to Valtrex: 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 Valtrex 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 Valtrex side effects may include: nausea, stomach pain; or headache. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

Valtrex side effects more detail What other drugs will affect Valtrex? Valtrex can harm your kidneys. This risk may increase when you also use certain other medicines, including: antivirals, chemotherapy, certain antibiotics, medicine for bowel disorders, medicine to prevent organ transplant rejection, injectable osteoporosis medication, and some pain or arthritis medicines including aspirin, Advil, and Aleve.

Ask your pharmacist if you are concerned you are taking other medications that may harm your kidneys. Other drugs may interact with valacyclovir, including prescription and over-the-counter medicines, vitamins, and herbal products.