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Valtrex Side Effects

Common Valtrex Side Effects

The most commonly reported Valtrex side effects (click to view or check a box to report):

Renal Failure Acute (522)
Dizziness (449)
Nausea (423)
Dysarthria (392)
Depressed Level Of Consciousness (354)
Altered State Of Consciousness (346)
Blood Creatinine Increased (336)
Vomiting (276)
Encephalopathy (266)
Headache (260)
Blood Urea Increased (236)
Hallucination (224)
Delirium (222)
Malaise (218)
Nervous System Disorder (187)
Gait Disturbance (181)
Overdose (157)
Decreased Appetite (157)
Asthenia (155)
Anorexia (154)

➢ More



If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

Valtrex Side Effects Reported to FDA

The following Valtrex reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.


The appearance of Valtrex on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.
Transient Ischaemic Attack, Meningitis, Herpes Zoster, Headache, Gastric Disorder, Eye Pain, Dysarthria, Hypoaesthesia, Trigeminal Neuralgia
on Mar 25, 2014 Female from US , 52 years of age, was diagnosed with and was treated with Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: transient ischaemic attack, meningitis, herpes zoster, headache, gastric disorder, eye pain, dysarthria, hypoaesthesia, trigeminal neuralgia. Valtrex dosage: 1g Per Day.
Associated medications used:
  • Coumadin
Patient was hospitalized.

Delirium, Renal Disorder, Dyslalia
Patient was taking Valtrex. Patient felt the following Valtrex side effects: delirium, renal disorder, dyslalia on Feb 26, 2014 from JP Additional patient health information: Female , 84 years of age, weighting 108.0 lb, was diagnosed with and. Valtrex dosage: 1000mg Three Times Per Day.
Multiple prescriptions taken:
  • Voltaren (25mg Three Times Per Day)
  • Coniel
  • Mecobalamin
  • Eurodin
Patient was hospitalized.

Nephrolithiasis, Renal Colic
Adverse event was reported on Feb 19, 2014 by a Female taking Valtrex (Dosage: 1tab Per Day) was diagnosed with and. Location: US , 28 years of age, After Valtrex was administered, patient encountered several Valtrex side effects: nephrolithiasis, renal colic.
Multiple concurrent drugs taken:
  • Lamictal
Patient was hospitalized.

Toxic Encephalopathy, Insomnia
on Feb 17, 2014 Female from JP , 90 years of age, was diagnosed with and was treated with Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: toxic encephalopathy, insomnia. Valtrex dosage: 1000mg Three Times Per Day.
Associated medications used:
  • Arasena-a



Neutropenia, Thrombocytopenia
on Mar 13, 2014 Female from JP , 61 years of age, was diagnosed with and was treated with Valtrex. Patient felt the following Valtrex side effects: neutropenia, thrombocytopenia. Valtrex dosage: 1000mg Three Times Per Day.
Multiple prescriptions taken:
  • Tegretol
  • Methycobal
  • Juvela N
Patient was hospitalized.

Renal Failure Acute, Dysuria, Asthenia
Patient was taking Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: renal failure acute, dysuria, asthenia on Mar 13, 2014 from JP Additional patient health information: Female , 91 years of age, weighting 88.18 lb, was diagnosed with and. Valtrex dosage: 1000mg Three Times Per Day.
Multiple concurrent drugs taken:
  • Lyrica (75mg Per Day)
  • Glimicron
  • Coniel
  • Micardis
  • Bonalon
Patient was hospitalized.

Delirium, Restlessness, Hallucination, Hallucination, Auditory, Poriomania, Insomnia, Delusion
Adverse event was reported on Feb 25, 2014 by a Male taking Valtrex (Dosage: 500mg Per Day) was diagnosed with and. Location: JP , 79 years of age, Directly after, patient experienced the unwanted or unexpected Valtrex side effects: delirium, restlessness, hallucination, hallucination, auditory, poriomania, insomnia, delusion.

Encephalopathy, Renal Failure, Rash
on Feb 27, 2014 Male from JP , 83 years of age, was diagnosed with and was treated with Valtrex. Patient felt the following Valtrex side effects: encephalopathy, renal failure, rash. Valtrex dosage: N/A.
Multiple prescriptions taken:
  • Aciclovir
Patient was hospitalized.

Altered State Of Consciousness, Hyponatraemia, Cognitive Disorder, Disorientation
on Feb 05, 2014 Female from JP , 86 years of age, was diagnosed with and was treated with Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: altered state of consciousness, hyponatraemia, cognitive disorder, disorientation. Valtrex dosage: 1000mg Three Times Per Day.

Asthenia, Fall
Patient was taking Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: asthenia, fall on Feb 05, 2014 from US Additional patient health information: Female , 95 years of age, was diagnosed with and. Valtrex dosage: 1000mg Three Times Per Day.

Blood Urine Present
Adverse event was reported on Feb 05, 2014 by a Male taking Valtrex (Dosage: 1000mg As Required) was diagnosed with and. Location: US , 31 years of age, Patient felt the following Valtrex side effects: blood urine present.

Pruritus, Hyperhidrosis, Nausea, Herpes Virus Infection
on Feb 05, 2014 Female from US , 60 years of age, was diagnosed with and was treated with Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: pruritus, hyperhidrosis, nausea, herpes virus infection. Valtrex dosage: 500mg Twice Per Day.
Multiple concurrent drugs taken:
  • Lyrica (75mg Per Day)
  • Flexeril (10mg Three Times Per Day)
  • Lortab (1tab Twice Per Day)
  • Corgard
  • Lovastatin
  • Estradiol
  • Allopurinol
  • Prilosec


Knee Operation, Treatment Noncompliance, Adverse Event
on Feb 05, 2014 Female from US , 76 years of age, was diagnosed with and was treated with Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: knee operation, treatment noncompliance, adverse event. Valtrex dosage: N/A.

Off Label Use
Patient was taking Valtrex. Patient felt the following Valtrex side effects: off label use on Feb 05, 2014 from US Additional patient health information: Male , 67 years of age, was diagnosed with and. Valtrex dosage: 1g Twice Per Day.

Abdominal Discomfort
Adverse event was reported on Feb 05, 2014 by a Female taking Valtrex (Dosage: N/A) was diagnosed with and. Location: US , 71 years of age, After Valtrex was administered, patient encountered several Valtrex side effects: abdominal discomfort.

Chest Pain, Pain In Extremity, Hypertension
on Feb 05, 2014 Female from US , 51 years of age, was diagnosed with and was treated with Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: chest pain, pain in extremity, hypertension. Valtrex dosage: N/A.

Prescribed Overdose
on Feb 05, 2014 Patient from US , child 10 years of age, was diagnosed with and was treated with Valtrex. Patient felt the following Valtrex side effects: prescribed overdose. Valtrex dosage: 6g Per Day.

Leukopenia, Mean Cell Volume Increased, Anaemia
Patient was taking Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: leukopenia, mean cell volume increased, anaemia on Feb 05, 2014 from US Additional patient health information: Male , 54 years of age, was diagnosed with and. Valtrex dosage: 1g Per Day.

Treatment Noncompliance
Adverse event was reported on Feb 05, 2014 by a Female taking Valtrex (Dosage: 500mg Twice Per Day) was diagnosed with and. Location: US , 30 years of age, weighting 125.2 lb, Directly after, patient experienced the unwanted or unexpected Valtrex side effects: treatment noncompliance.
Associated medications used:
  • Acyclovir (400mg Twice Per Day)
  • Trivora


Hair Growth Abnormal
on Feb 05, 2014 Female from US , 65 years of age, weighting 219.4 lb, was diagnosed with and was treated with Valtrex. Patient felt the following Valtrex side effects: hair growth abnormal. Valtrex dosage: 500mg Twice Per Day.
Multiple prescriptions taken:
  • Catapres
  • Hormone Replacement


Hallucination
on Feb 05, 2014 Female from US , 30 years of age, was diagnosed with and was treated with Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: hallucination. Valtrex dosage: 1tab Twice Per Day.

Treatment Failure
Patient was taking Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: treatment failure on Feb 05, 2014 from US Additional patient health information: Patient , 66 years of age, . Valtrex dosage: N/A.

Genital Herpes, Ill-defined Disorder, Skin Discolouration, Skin Lesion, Pain, Prescribed Overdose, Product Quality Issue
Adverse event was reported on Feb 05, 2014 by a Male taking Valtrex (Dosage: 1g Twice Per Day) was diagnosed with and. Location: US , 78 years of age, Patient felt the following Valtrex side effects: genital herpes, ill-defined disorder, skin discolouration, skin lesion, pain, prescribed overdose, product quality issue.
Multiple prescriptions taken:
  • Procardia
  • Citracal


Therapeutic Response Unexpected
on Feb 05, 2014 Female from US , 54 years of age, was diagnosed with and was treated with Valtrex. After Valtrex was administered, patient encountered several Valtrex side effects: therapeutic response unexpected. Valtrex dosage: 1tab Per Day.
Multiple concurrent drugs taken:
  • Naproxen


Hepatic Enzyme Increased
on Feb 05, 2014 Male from US , 48 years of age, was diagnosed with and was treated with Valtrex. Directly after, patient experienced the unwanted or unexpected Valtrex side effects: hepatic enzyme increased. Valtrex dosage: 500mg Twice Per Day.

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Keep Track of Side Effects

Note Your Observations

It is really important to keep of your symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:

     

    Side Effects

    Scale

    Date & Time

    Other Medicine(s) or Treatment(s)

     

     

     

     

    Scale: 1 = very mild to 10 = very bad


    Track Online

  • User Sign In
  • Register to track your side effects

  • You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Discuss Valtrex Side Effects

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    How Effective is Valtrex for You?

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    Effective
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