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Denavir Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
- application site reactions (such as redness, burning, stinging, numbness, rash, pain, itching, skin discoloration, or hives),
- changes in the sense of taste,
- headache, or
- swollen mouth or throat.
A very serious allergic reaction to Denavir is rare. Seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing.
A dose of Denavir should be applied every 2 hours during waking hours for a period of 4 days. Treatment should be started as early as possible (i.e., during the prodrome or when lesions appear). Do not use other topical medications to treat the same area at the same time as Denavir topical, unless directed by your doctor. No other medicines have been reported to interact with Denavir topical. Tell your doctor all prescription or over-the-counter medications you use. Tell your doctor if you are pregnant before using Denavir. Discuss the risks and benefits with your doctor. It is unknown if this medication passes into breast milk. Consult your doctor before breastfeeding.
Our Denavir (penciclovir cream) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
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 Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Denavir in Detail - Patient Information: Side Effects
Serious side effects have not been reported with the use of penciclovir topical.
Other less serious side effects may be more likely to occur. Continue to use penciclovir topical and talk to your doctor if you experience:
- local numbness or tingling where the cream is applied;
- changes in taste;
- rash; or
- irritation at the application site.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Denavir (Penciclovir)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Denavir Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Denavir (Penciclovir)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Denavir FDA Prescribing Information: Side Effects
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
In two double-blind, placebo-controlled trials, 1516 patients were treated with DENAVIR (penciclovir cream) and 1541 with placebo. One or more local adverse reactions were reported by 3% of the patients treated with DENAVIR and 4% of placebo-treated patients. The rates of reported local adverse reactions are shown in Table 1.
Table 1 : Local Adverse Reactions Reported in Phase
|Application site reaction||1||2|
|Hypesthesia/Local anesthesia||< 1||< 1|
|Taste perversion||< 1||< 1|
|Rash (erythematous)||< 1||< 1|
Two studies, enrolling 108 healthy subjects, were conducted to evaluate the dermal tolerance of 5% penciclovir cream (a 5-fold higher concentration than the commercial formulation) compared to vehicle using repeated occluded patch testing methodology. The 5% penciclovir cream induced mild erythema in approximately one-half of the subjects exposed, an irritancy profile similar to the vehicle control in terms of severity and proportion of subjects with a response. No evidence of sensitization was observed.
The following adverse reactions have been identified during post-approval use of DENAVIR. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The following events have been identified from worldwide post-marketing use of DENAVIR in treatment of recurrent herpes labialis (cold sores) in adults. These events have been chosen for inclusion due to a combination of their seriousness, frequency of reporting, or potential causal connection to DENAVIR.
Read the entire FDA prescribing information for Denavir (Penciclovir)
Additional Denavir Information
Denavir - User Reviews
Denavir User Reviews
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Report Problems to the Food and Drug Administration
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.
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