Denavir Cream 1% (Penciclovir)
Vectavir
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Fact Table
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| Formula | C10H15N5O3 |
| License | FDA approved (1996); EMA approved |
| Bioavailability | Negligible systemic absorption (topical use) |
| Legal status | Prescription only (Rx) in many regions; OTC in some countries |
| Chemical Name | 2-amino-9-[4-hydroxy-3-(hydroxymethyl)butyl]-9H-purin-6-ol |
| Elimination half-life | ~2–3 hours (systemic; intracellular triphosphate ~10–20 hours) |
| Dosage (Strength) | 1% topical cream (apply every 2 hours while awake for 4 days) |
| Pregnancy | Category B – No evidence of risk in humans |
| Brands | Denavir |
| Protein binding | ~20% |
| PubChem CID | 135398740 |
| MedlinePlus | a699043 |
| ChEBI | 6367 |
| ATC code | D06BB06 |
| DrugBank | DB00201 |
| KEGG | D01131 |
| Routes of administration | Topical (cutaneous cream) |
Denavir (penciclovir) cream 1% is used to treat recurring cold sores on the lips or face in people aged 12 and older. It helps stop the herpes simplex virus from spreading, which can help sores heal faster. This medication is classified as a topical antiviral agent and comes as a white cream that's applied directly to the affected area.
Directions
Apply Denavir cream every 2 hours while awake for a treatment period of 4 days. Start treatment as soon as you notice the first signs or symptoms of a cold sore, such as tingling, redness, or itching. The cream should be applied to the lips and face where cold sore lesions appear or may develop.
Before applying the cream, wash your hands thoroughly. Apply a thin layer of penciclovir cream to cover the affected area completely. After application, wash your hands again to prevent spreading the virus to other parts of the body or to other people. Don't apply the cream inside the mouth or near the eyes.
Ingredients
The active ingredient in Denavir is penciclovir.
Cautions
Before using this medication, you may want to consult a healthcare provider about the following:
- Any existing health conditions
- Any allergies
- A list of all medications currently being taken
- Denavir should only be used on cold sores on the lips and face and should not be applied inside the mouth or on other mucous membranes.
- Avoid getting Denavir in or near the eyes, as it may cause irritation if eye contact occurs.
- If a cold sore does not improve or gets worse while using Denavir, it should be checked by a healthcare provider to rule out a bacterial infection.
- The safety and effectiveness of Denavir have not been established in people with weakened immune systems.
Contraindications
Avoid taking or using this medication if any of the following apply:
- Known hypersensitivity to penciclovir
- Allergic reaction to any ingredient in the cream
Side Effects
Common side effects of Denavir include:
- Application site irritation or reaction
- Mild redness or rash at the application site
- Temporary numbness or tingling where the cream is applied
- Changes in taste
These side effects are generally mild and occur at or near the area where Denavir is applied. Some people may notice brief numbness, tingling, or mild redness, especially with repeated applications. These effects usually resolve on their own without stopping treatment.
More serious side effects are rare but may include headache, swelling of the lips or throat, hives, skin discoloration, worsening irritation, or allergic-type reactions such as itching. Seek medical attention if you develop severe swelling, persistent pain, or worsening skin reactions.
Frequently Asked Questions about Denavir Cream 1% (Penciclovir)
What is Denavir Cream 1% used for?
Denavir Cream 1% (penciclovir) is a topical antiviral medication used to treat cold sores (herpes labialis) caused by the herpes simplex virus. It helps reduce the duration and severity of symptoms like pain, burning, and itching.
How does Denavir Cream work?
Denavir contains penciclovir, which interferes with viral DNA replication. By stopping the herpes virus from multiplying, it helps the body heal the cold sore faster and may shorten the time it takes for symptoms to improve.
How should Denavir Cream be applied?
Apply a thin layer of Denavir Cream directly to the affected area every 2 hours while awake, usually for 4 days, starting at the first sign of a cold sore (such as tingling or redness). Wash hands before and after use and avoid applying it inside the mouth or nose.
Can Denavir be used to prevent cold sores?
No, Denavir is not approved for preventing cold sores. It is used to treat them after they have started. It does not cure herpes or prevent future outbreaks or transmission to others.
What are the possible side effects of Denavir?
Denavir is generally well tolerated, but some users may experience mild side effects such as skin irritation, redness, tingling, or numbness at the application site. Severe allergic reactions are rare but possible.
Is Denavir safe for children?
Denavir is approved for use in adults and children aged 12 years and older. It is not recommended for children under 12 unless directed by a healthcare provider.
Can Denavir be used during pregnancy or breastfeeding?
Denavir should be used during pregnancy only if clearly needed and prescribed by a doctor. It is not known if penciclovir passes into breast milk, so consult a healthcare provider before using it while breastfeeding.
Can Denavir be used on genital herpes?
Denavir is only approved for treating cold sores on the lips and face. It should not be used for genital herpes, shingles, or other viral skin infections unless directed by a healthcare provider.
What should I do if I miss a dose?
If you miss a dose, apply it as soon as you remember, but skip it if it's almost time for the next one. Do not double up on applications. Consistent, timely use improves effectiveness.
Can I use makeup or lip balm over Denavir Cream?
You can use cosmetics or lip products after applying Denavir, but wait until the cream has dried. Be careful not to disturb the treated area, and avoid sharing personal items to prevent spreading the virus.
