acivir cream - Acyclovir (5% w/w) medicine

Acivir Cream: Complete Guide to Uses, Dosage, and Safety

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🏭 Cipla Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for herpes labialis and genital herpes.
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Swelling of the face, lips, or throat, or difficulty breathing.
  • Severe skin reaction with blistering or peeling.
  • Symptoms that do not improve after 7 days of treatment.
  • Signs of a secondary bacterial infection, such as increased pain, redness, warmth, or pus.
  • Decreased urine output or swelling in the legs, which may indicate kidney problems (extremely rare).
  • High fever or chills accompanying the skin lesions.

If experiencing severe symptoms, call emergency services immediately.

What is acivir cream used for?

This medicine is a topical antiviral cream containing acyclovir 5% w/w. It is used to treat cold sores and genital herpes by stopping the virus from multiplying. Apply it to the affected area 5 times a day for 4 to 5 days, starting at the first sign of an outbreak.

  • Generic Name: Acyclovir
  • Manufacturer: Cipla Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 acivir cream के बारे में (Hindi Summary)

उपयोग: यह दवा एक टॉपिकल एंटीवायरल क्रीम है जिसमें एसाइक्लोविर 5% w/w होता है। इसका उपयोग हर्पीज सिंप्लेक्स वायरस के कारण होने वाले संक्रमणों जैसे होठों पर होने वाले छाले (कोल्ड सोर) और जननांग हर्पीज के इलाज के लिए किया जाता है। यह दवा वायरस को बढ़ने से रोकती है, जिससे छाले जल्दी भर जाते हैं और दर्द व खुजली कम होती है। इसे लक्षण शुरू होते ही दिन में 5 बार प्रभावित हिस्से पर लगाएं। यह दवा केवल बाहरी त्वचा पर उपयोग के लिए है, आंखों, मुंह या योनि के अंदर न लगाएं।

साइड इफेक्ट्स: इस दवा के आम दुष्प्रभाव हल्के और अस्थायी होते हैं, जैसे लगाने के स्थान पर जलन, खुजली, लालिमा या त्वचा का सूखना। ये आमतौर पर कुछ समय में ठीक हो जाते हैं। दुर्लभ मामलों में गंभीर एलर्जी प्रतिक्रिया हो सकती है, जिसमें चेहरे, होंठ या गले में सूजन या सांस लेने में कठिनाई हो सकती है। ऐसा होने पर तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा का उपयोग करने से पहले और बाद में अपने हाथ अच्छी तरह धोएं। केवल प्रभावित हिस्से पर पतली परत लगाएं और हल्के से मलें। आंखों, नाक, मुंह या योनि के संपर्क से बचें। यह दवा केवल बाहरी उपयोग के लिए है, इसे निगलें नहीं। यदि आप गर्भवती हैं या स्तनपान करा रही हैं, तो डॉक्टर से सलाह लें। 7 दिनों तक सुधार न होने पर डॉक्टर से मिलें। बच्चों की पहुंच से दूर रखें।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 acivir cream Uses & Benefits

  • [{"condition":"Herpes labialis (cold sores)","description":"This medicine is used to treat cold sores on the lips and around the mouth caused by herpes simplex virus type 1.
  • It helps to reduce pain, itching, and the time it takes for the sore to heal.","evidence":"Well-established"},{"condition":"Genital herpes","description":"This medicine is used to treat genital herpes outbreaks caused by herpes simplex virus type 2.
  • It reduces symptoms and helps sores heal faster.","evidence":"Well-established"},{"condition":"Herpes simplex skin infections","description":"This medicine may be used for other skin infections caused by herpes simplex virus, such as those occurring in eczema herpeticum or in immunocompromised patients.","evidence":"Moderate"}]

Off-label uses: [{"condition":"Herpes zoster (shingles) skin lesions","description":"Topical acyclovir is sometimes used off-label to help with skin lesions of shingles, but oral antiviral therapy is the standard treatment.","evidence":"Limited"},{"condition":"Molluscum contagiosum","description":"Some doctors may recommend topical acyclovir for molluscum contagiosum, but evidence is limited and it is not a standard treatment.","evidence":"Limited"}]

Primary treatment for: Herpes simplex virus skin infections

Also treats: Herpes labialis, Genital herpes

📋 Drug Information

Generic Name(s)Acyclovir
Brand NameAcivir Cream
ManufacturerCipla Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassDERMA
Action ClassAntiviral (Non-HIV) drugs
Route of AdministrationTopical
StorageStore at room temperature between 15°C and 25°C. Do not freeze. Keep the tube tightly closed when not in use. Protect from light.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Start applying this medicine at the very first sign of an outbreak, such as tingling, itching, or redness, for the best results.
2
Wash your hands before and after applying the cream to prevent spreading the virus to other areas or people.
3
Apply a thin layer only to the affected area and do not cover it with a bandage unless your doctor advises otherwise.
4
If your symptoms do not improve after 7 days or if they worsen, consult your doctor.
5
Do not use this medicine for eye infections or inside the mouth; separate formulations are available for those areas.
6
Keep the tube tightly closed and store it at room temperature, away from direct sunlight.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Cold sores on lips
This medicine is commonly prescribed for this.
Likely Use
Genital sores
This medicine is used for genital herpes outbreaks.
Likely Use
Fever
This medicine is not a fever reducer.
Not Primary
Skin rash not caused by herpes
This medicine is not effective for other skin conditions.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is applied to the skin and is absorbed only in small amounts into the bloodstream. Systemic absorption is minimal when applied to intact skin, but may be slightly higher when applied to broken skin or mucous membranes.
DistributionAfter topical application, acyclovir distributes mainly in the skin and underlying tissues. Any medicine that reaches the bloodstream is distributed throughout the body, but levels are very low compared to oral or intravenous forms.
Protein BindingAcyclovir is approximately 9% to 33% bound to plasma proteins. This binding is not significant enough to cause interactions with other protein-bound medicines.
MetabolismAny acyclovir that enters the bloodstream is partly metabolized in the liver to inactive metabolites. However, because topical absorption is minimal, liver metabolism plays a very small role in the overall effect of this medicine.
Half-LifeThe elimination half-life of acyclovir is approximately 2.5 to 3.3 hours in people with normal kidney function. This applies to the small amount that may be absorbed systemically after topical application.
ExcretionAcyclovir is primarily excreted unchanged by the kidneys through glomerular filtration and tubular secretion. Because topical absorption is minimal, the amount excreted is very low.
BioavailabilityThe bioavailability of acyclovir after topical application is very low, typically less than 1% to 2% when applied to intact skin. This means that very little of the medicine enters the bloodstream, which reduces the risk of systemic side effects.
Onset of ActionThis medicine starts working as soon as it is applied to the affected skin. However, visible improvement in symptoms such as pain and itching may take 1 to 2 days. The cream should be applied at the first sign of an outbreak for best results.
Peak Plasma TimePeak plasma concentrations after topical application are very low and are typically reached within 1 to 2 hours. However, these levels are not considered clinically significant for systemic effects.
Duration of ActionThe effect of this medicine lasts as long as it is applied regularly. Each application provides local antiviral activity for several hours, which is why it is usually applied multiple times a day as prescribed.

How It Works

This medicine works by entering the herpes simplex virus-infected skin cells and being converted into an active form by viral enzymes. The active form then stops the virus from making new DNA, which is essential for the virus to multiply. By blocking viral DNA synthesis, this medicine prevents the virus from spreading and helps the body's immune system to clear the infection. It is most effective when the virus is actively replicating, which is why it should be applied at the first sign of an outbreak.

Mechanism Steps

1
Entry into infected cells: This medicine penetrates the skin and enters cells infected by the herpes simplex virus.
2
Activation by viral thymidine kinase: Inside the infected cell, the viral enzyme thymidine kinase converts acyclovir into acyclovir monophosphate.
3
Conversion to active triphosphate form: Cellular enzymes further convert acyclovir monophosphate into acyclovir triphosphate, the active form of the medicine.
4
Inhibition of viral DNA polymerase: Acyclovir triphosphate competes with the natural building blocks of DNA and inhibits viral DNA polymerase, preventing the virus from copying its genetic material.
5
Chain termination: Acyclovir triphosphate gets incorporated into the growing viral DNA chain and causes it to terminate, stopping the virus from multiplying.

💡 How to Take acivir cream

Strength: Cream containing acyclovir 5% w/w.

1Wash your hands thoroughly with soap and water before applying the cream.
2Clean and dry the affected area gently.
3Squeeze a small amount of cream onto your fingertip or a clean cotton swab.
4Apply a thin layer to the affected area and the skin just around it.
5Gently rub it in until it disappears. Do not cover with a bandage unless instructed.
6Wash your hands again after applying the cream to avoid spreading the virus.
7Repeat this process 5 times a day, or as directed by your doctor.

Dosage Information

Adult DosageFor adults and adolescents 12 years and older, apply a thin layer of this medicine to the affected area and surrounding skin 5 times a day (approximately every 4 hours) for 4 to 5 days, or as directed by your doctor. Start using it as soon as the first signs of an outbreak appear. The dose and duration must be individualized by a qualified clinician based on the severity of the infection and your response to treatment.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients can use this medicine in the same way as younger adults. However, because kidney function may decline with age, if you have kidney problems, consult your doctor before use.
Renal ImpairmentNo dose adjustment is needed for topical use because systemic absorption is minimal. However, if you have severe kidney disease, inform your doctor before using this medicine.
Hepatic ImpairmentNo dose adjustment is needed for topical use because systemic absorption is minimal. However, if you have severe liver disease, inform your doctor before using this medicine.
Maximum Daily DoseThe maximum recommended frequency is 5 applications per day. Do not exceed this unless directed by your doctor.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Apply the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not apply a double dose to catch up.

⚠️ Side Effects of acivir cream

✅ Common Side Effects

Burning or stinging at application site (Common (1-10%))
This usually goes away after a few minutes. If it persists or is severe, consult your doctor.
Itching (Common (1-10%))
Try not to scratch. If itching is bothersome, talk to your doctor or pharmacist.
Redness or rash (Common (1-10%))
This is usually mild and temporary. If it worsens or spreads, stop using the cream and consult your doctor.
Dryness or peeling of skin (Common (1-10%))
Apply a gentle moisturizer if needed. If dryness is severe, consult your doctor.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience swelling of the face, lips, throat, or difficulty breathing.
Severe skin reaction (e.g., contact dermatitis) (Rare (<0.1%))
Stop using the cream and consult a doctor if you develop severe redness, blistering, or peeling of the skin.

⚠️ Rare Side Effects

Kidney problems due to systemic absorption
This is extremely unlikely with topical use. If you notice decreased urine output or swelling, seek medical advice.

Consult your doctor if you experience any unusual symptoms.

🛡️ Safety & Warnings

🚫 Contraindications

["Known allergy or hypersensitivity to acyclovir, valacyclovir, or any other ingredient in the cream.","Do not use in the eyes or inside the mouth, nose, or vagina."]

⚠️ Warnings & Precautions

["For external use only. Do not swallow.","Avoid contact with eyes. If contact occurs, rinse thoroughly with water.","Do not apply to large areas of the body or for prolonged periods without medical advice.","If your symptoms do not improve after 7 days, consult your doctor.","People with weakened immune systems should consult a doctor before using this medicine.","Do not share this medicine with others.","Keep out of reach of children."]

🤱 Lactation Safety

This medicine is generally considered safe during breastfeeding. Apply it only to the affected area and avoid applying it to the breasts to prevent the baby from ingesting it. Wash hands thoroughly after application. Consult your doctor for personalized advice.

💊 Overdose Management

Overdose with this medicine is unlikely because it is applied to the skin. If someone accidentally swallows the cream, seek medical attention immediately. Symptoms of overdose may include nausea, vomiting, headache, or confusion. Treatment is supportive and symptomatic.

⏰ Missed Dose

If you miss a dose, apply it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not apply a double dose to make up for a missed one.

Additional Safety Advice

General Safety

Always wash your hands thoroughly before and after applying this medicine to avoid spreading the virus to other parts of your body or to other people. Apply a thin layer of the cream to the affected area only, and gently rub it in. Do not cover the area with a bandage or dressing unless your doctor tells you to. Avoid contact with your eyes, inside the nose, mouth, or vagina. If the cream accidentally gets into these areas, rinse with plenty of water. This medicine is for external use only and should never be swallowed. If you are pregnant, planning to become pregnant, or breastfeeding, talk to your doctor before using this medicine. Do not use this medicine for longer than prescribed without consulting your doctor. If your symptoms do not improve after 7 days or if they get worse, contact your healthcare provider. Keep this medicine out of the reach of children. Do not share this medicine with others, even if they have similar symptoms.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients can use this medicine safely. However, if you have kidney problems, consult your doctor before use, as acyclovir is excreted by the kidneys.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, talk to your doctor about the risks and benefits of using this medicine. Topical acyclovir is generally considered safe during pregnancy, but always consult your healthcare provider.

🏥 Post-Surgery Considerations

If you have recently had surgery, consult your doctor before using this medicine on surgical wounds. It is generally safe to use on intact skin, but avoid applying it to open wounds unless advised.

🦷 Dental Procedures

If you have a cold sore, inform your dentist before any dental procedure. They may recommend postponing non-urgent procedures until the sore heals to prevent spreading the virus.

💚 Lifestyle Tips for Better Results

🏃
Manage stress as it can trigger herpes outbreaks.
🥗
Get adequate sleep to keep your immune system strong.
😴
Eat a balanced diet rich in fruits and vegetables.
💧
Avoid sharing utensils, towels, or lip balm during an outbreak.
🧘
Use sunscreen on your lips to prevent cold sore triggers.
🌞
Wash your hands frequently, especially after touching the sores.

🏋️ Exercise Considerations

There are no specific exercise restrictions while using this medicine. However, if you have genital herpes, avoid strenuous activities that may irritate the affected area until it heals.

🥗 Diet Recommendations

Include foods rich in lysine, such as dairy, fish, and beans, which may help reduce outbreaks.
Limit foods high in arginine, such as chocolate, nuts, and seeds, as they may trigger outbreaks.
Stay well hydrated to support overall health.
Avoid excessive alcohol, which can weaken the immune system.

💼 Impact on Daily Work & Life

This medicine does not affect your ability to drive or operate machinery. You can continue your daily activities, but avoid close contact with others if you have active sores, especially genital herpes, to prevent transmission.

🛑 When to Stop This Medicine

Stop using this medicine if your symptoms have completely healed or after the prescribed duration (usually 4 to 5 days, up to 10 days). If your symptoms persist or worsen, consult your doctor before stopping. Do not stop prematurely as it may slow down healing.

📅 Long-Term Use Effects

Long-term use of this medicine is generally not recommended unless advised by a doctor. Prolonged use on large areas of skin may rarely lead to systemic absorption and potential kidney problems, but this is extremely uncommon. If you need to use it for more than 10 days, consult your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Oral antiviral medicines

Oral acyclovir, valacyclovir, or famciclovir may be prescribed for more severe or frequent outbreaks.

Evidence: Well-established
Penciclovir cream

Another topical antiviral that can be used for cold sores.

Evidence: Well-established
Docosanol cream

An over-the-counter cream that can help shorten healing time of cold sores.

Evidence: Moderate

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There is no vaccine available for herpes simplex virus. This medicine does not interact with vaccines. However, if you are scheduled for a vaccination, inform your doctor about your herpes outbreak.

📦 Storage Guide

✅ DO

Store at room temperature (15-25°C)

❌ DON'T

Do not freeze

✅ DO

Keep the tube tightly closed

❌ DON'T

Do not leave the cap off

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in the bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging along with a copy of your prescription. Store it at room temperature and protect it from extreme heat or cold. If you are crossing time zones, continue applying the cream at your usual intervals; there is no need to adjust the schedule. Keep it in your carry-on luggage if flying, as checked baggage may be exposed to extreme temperatures. Declare it at customs if required.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 32-year-old woman with recurrent cold sores
She noticed a tingling sensation on her lip and immediately started applying this medicine 5 times a day. Within 2 days, the cold sore was much smaller and less painful. She made sure to wash her hands before and after each application.
💡 Lesson: Early initiation of this medicine at the first sign of an outbreak can significantly reduce the severity and duration of cold sores.
👤 A 45-year-old man with genital herpes
He was prescribed this medicine for a genital herpes outbreak. He applied it regularly for 5 days and noticed that the sores healed faster than usual. He also avoided sexual contact until the sores were completely healed to prevent transmission.
💡 Lesson: Consistent use of this medicine as prescribed helps to speed up healing and reduce the risk of spreading the virus to others.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts working immediately upon application, but visible improvement in symptoms may take 1 to 2 days. It is most effective when started at the first sign of an outbreak.

Q: Can I use this medicine on my face?

A: Yes, this medicine can be used on the face for cold sores, but avoid contact with the eyes. If it gets into your eyes, rinse thoroughly with water.

Q: Is this medicine safe for children?

A: Pediatric dosing is not established from available information. Consult a pediatrician before using this medicine on a child.

Q: Can I use this medicine for shingles?

A: This medicine is not the standard treatment for shingles. Oral antiviral medicines are usually prescribed for shingles. Consult your doctor.

Q: Does this medicine cure herpes?

A: No, this medicine does not cure herpes. It helps to control outbreaks and reduce symptoms. The virus remains in the body and can reactivate.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine on my face?
  • Is it safe to use during pregnancy?
  • Can I use it while breastfeeding?
  • What if I miss a dose?
  • How long should I use it?
  • Can I use it for shingles?

🔄 Substitutes for acivir cream

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Acyclovir cream can cure herpes permanently.
    Fact: This medicine helps to control outbreaks and reduce symptoms but does not cure the infection. The virus remains in the body and can reactivate.
  • Myth: You can use acyclovir cream for any skin rash.
    Fact: This medicine is only effective against herpes simplex virus. It will not work for other skin conditions like fungal infections or bacterial rashes.
  • Myth: Acyclovir cream is safe to use in the eyes.
    Fact: This medicine is for external skin use only. It should never be applied to the eyes. There are separate eye preparations for eye infections.

🔄 Alternative Options

Generic Alternatives

  • Acyclovir 5% w/w cream (various manufacturers)

Brand Alternatives

  • Acivir Cream
  • Zovirax Cream
  • Acyclovir Cream

📊 Comparison with Similar Medicines

[{"medicine":"Acyclovir cream","active_ingredient":"Acyclovir 5%","route":"Topical","typical_use":"Herpes labialis, genital herpes","frequency":"5 times a day"},{"medicine":"Penciclovir cream","active_ingredient":"Penciclovir 1%","route":"Topical","typical_use":"Herpes labialis","frequency":"Every 2 hours while awake for 4 days"},{"medicine":"Docosanol cream","active_ingredient":"Docosanol 10%","route":"Topical","typical_use":"Herpes labialis","frequency":"5 times a day"}]

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